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11 Inch Rears

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42 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCH11 Inch Rears

Reported or suspected cause

only reasonably priced option in stock

Reported cause

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Reported cause

The reason I went with the 315s is because at the time it was the only reasonably priced option in stock for a decent rolling diameter at 19X11.

11 Inch Rears
Frequently discussed work

Install many 996's and no spacer required

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Performed · outcome unconfirmed

Again, he says he has fitted many 996's and no spacer required on the 2001-2004 model.

11 Inch Rears
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Leading evidence: 'only reasonably priced option in stock' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'only reasonably priced option in stock' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Install many 996's and no spacer required' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Install many 996's and no spacer required

Performed · outcome unconfirmed

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1
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Performed · outcome unconfirmed

Again, he says he has fitted many 996's and no spacer required on the 2001-2004 model.

11 Inch Rears

Install yet, and want

Performed · outcome unconfirmed

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0
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Performed · outcome unconfirmed · Original poster

I have the taco wing, just havent had it installed yet, and want to finish the GT3 look.

11 Inch Rears

Run 295/30-18 w/no clearance issues

Performed · outcome unconfirmed

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0
Reported fixes
0
Unsuccessful attempts
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

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Performed · outcome unconfirmed

I run 295/30-18 w/no clearance issues.

11 Inch Rears

Run 315 25 19 tires

Performed · outcome unconfirmed

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0
Reported fixes
0
Unsuccessful attempts
1
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

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Performed · outcome unconfirmed

And on these 19" x 11" rims I run 315 25 19 tires with no issues

11 Inch Rears
Frequently discussed actions (10)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install many 996's and no spacer required

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Again, he says he has fitted many 996's and no spacer required on the 2001-2004 model.

11 Inch Rears

Install yet, and want

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I have the taco wing, just havent had it installed yet, and want to finish the GT3 look.

11 Inch Rears

Recommend maximum difference

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1

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Suggestion · Original poster

The tire calculator I used shows the dimensions within the 3% range of recommended maximum difference from stock, but just barely.

11 Inch Rears

Run 11 inch rears

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Suggestion · Original poster

Is anyone running 11 inch rears on narrow body?

11 Inch Rears

Run 14 inches back there

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Suggestion

you should talk to Lowstro on this forum, I think he's running 14 inches back there

11 Inch Rears

Run 18x11s, i would have gone

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Suggestion

If I was running 18x11s, I would have gone with the readily available always in stock options at 295 or 305.

11 Inch Rears

Run 295/30-18 w/no clearance issues

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I run 295/30-18 w/no clearance issues.

11 Inch Rears

Run 315 25 19 tires

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

And on these 19" x 11" rims I run 315 25 19 tires with no issues

11 Inch Rears

Run 315 rear tire

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that contain suggestions
1

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Suggestion

FYI.....there is NO reason to run a 315 rear tire on a 11" wheel for a street car.

11 Inch Rears

Run 5mm spacer probably

No successful repair reported for this finding.

0
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0
Unsuccessful attempts
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Discussions that contain suggestions
1

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Suggestion

You needed to run the 5mm spacer probably to clear on the INSIDE.

11 Inch Rears
Reported and suspected causes (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

only reasonably priced option in stock

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause

The reason I went with the 315s is because at the time it was the only reasonably priced option in stock for a decent rolling diameter at 19X11.

11 Inch Rears

suspension

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause

When I bought my wheels, he said that you can get away with slightly wider wheels/tires on the newer cars I think it was due to the suspension.

11 Inch Rears
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

42 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

There is NO difference between the rears of a 99-01 and 02-04.

No unique explicit quoted action; no causal link assigned

Generation: 20261027T154520Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Is anyone running 11 inch rears on narrow body? I'm looking at these wheels http://cgi.ebay.com/ebaymotors/18-PO...2308QQtcZphoto Has anyone had experience with this seller? He recommends 285 35 tires on 11 inch rears with 63mm offset. I currently have 275 35 on 10s with 65mm offset and it seems pretty tight. I would like to complete the GT3 look though. I've added the front bumper, side skirts, and bought the Taco wing, though I haven't had it put on yet.

POST 2Original post

I have 11" ET 63 wheels ( Sport Techno ) using 295/30 with RoW M030 and haven't encountered any clearance issues.

POST 3Original post

I've got 11" rears on my '03 C2 - no probs/awesome look and grip

POST 4Original post

I have 11" rears on my NB 996 with almost the same offset. I run 295/30-18 w/no clearance issues. Are those real GT3 wheels or knockoffs?

POST 5Original post

Ray...come on, for that price? The seller calls them GT3 "style" wheels. shirk....the 11" will be NO problem as long as your offset isn't too aggressive. Stick with the rec'd 63. As you start dropping to 60 and below you run into issues of the wheel sticking out past the fender.

POST 6Original post

Ask them who manufactures them or what brand they are.

POST 7 / ORIGINAL POSTEROriginal post

Definitely knockoffs, made in Italy but meet TUV and other standards. Tis is either my 4th or 5th set of tires and I've bought new wheels every time but once. Since this is my daily driver, never tracked, and really not driven that hard, I haven't worried too much about the wheels. In fact, the set on my car now are Voxx, not a particularly good brand but look great. I have 275 35s now. The seller of these wheels recommends 285 35s with 11 inch rears, but I've also heard 285 30 and 295 30. Any thoughts as to what would be the best fit, as far as filling up the wheel well? Wet traction is my primary concern, since I drive the car most days, rain or shine. I have the taco wing, just havent had it installed yet, and want to finish the GT3 look. As many miles as I have, my car had depreciated to near nothing, so from here on out, I can just please myself. I can't see ever selling it. A 3.2 with the same mileage is worth more. I can't figure that one out, but don't really mind living with it.

POST 8Original post

If buying reps, definitely speak with Wheel Dynamics (ask for Carlos or Roland) http://wheeldynamics.net , they are very knowledgeable on fitment remember that allowable offsets for 99-01 cars are different in the rear, which is why I won't quote you what my rears are (19x11, took 315/25 rubber)

POST 9Original post

Quotes source post: 5403182

What? There is NO difference between the rears of a 99-01 and 02-04. They are all the same. Now there IS a difference between the NARROW and WIDE body models. FYI.....there is NO reason to run a 315 rear tire on a 11" wheel for a street car. If you like the wider rubber and increased weight then cool, but not optimal like the 305 (or even the 295) would be.

POST 10Original post

Quotes source post: 5403243

I'm sure you're right, for some reason I remembered being told when researching my fitment here or RT that there was some difference when fitting 19s on mk1/mk2. Thanks for the info! In any event I deferred to the company selling the wheels and mine did wind up fitting well without spacers. The proprietors stand behind their product as well. If I was running 18x11s, I would have gone with the readily available always in stock options at 295 or 305. The reason I went with the 315s is because at the time it was the only reasonably priced option in stock for a decent rolling diameter at 19X11. There is now a narrower tire available from Vredestein that a lot of people seem to like. Does look nice, and car averages about 3mph where I live so that rear weight isn't killing me, but I would never track.

POST 11Original post

Quotes source post: 5403307

It's all about RD and offset when fitting ANY size wheel and tire to these cars. As far as your tire size, you're right, with max speed of 3mph it really doesn't matter what size boat anchor you are draggin' back there!

POST 12Original post

Quotes source post: 5403348

haha if I posted the mpg I've been getting, that would really be worth a laugh haha. OK I've gotta run, you guys take care of all the mothers in your lives!

POST 14Original post

These offsets sound different. I purchased a set of GT3 Wheels from a PCA member in New York two years ago. I also have two sets of CCW track wheels built with the exact same offset. Here is what I read from what is stamped outside and inside my wheels: Front 8.5X18 ET40 245/40/18 Hoosiers or 235/40/18 MPSC Rear 11X18 ET63 295/30/18 Hoosier and MPSC The 996 narrow body is the same as the 996 GT3. I am not an offset expert but I do know these GT3 wheels and CCWs fit perfectly. The Ebay site says 50mm offset front and 45mm offset rear. How that matches up with ET40 and ET63 I have no idea. Buy offical Porsche wheels if you want no problems!

POST 15Original post

Alex, it's like adding an 18mm spacer in the rear to your GENUINE GT3 wheels. Ouch!

POST 16Original post

Agree with Dell, it's all about the offset here's the offset stamped on OE 11 wide rims - shown on an 03 996 C2 - 67 in my case And on these 19" x 11" rims I run 315 25 19 tires with no issues

POST 17Original post

Quotes source post: 5406239

You need to read the e-bay ad a little more closely. It says Also available in 18X11" et 63 for narrow body cars. Don't feel bad, I missed it on my first read too.

POST 18Original post

If you buy these wheels, make sure to weigh them before you mount tires. I am interested in how close they get the weights on these reproductions.

POST 19Original post

Quotes source post: 5403243

I have been told by Carlos @ wheel dynamics that there is a difference. When I bought my wheels, he said that you can get away with slightly wider wheels/tires on the newer cars I think it was due to the suspension. The wheels I bought (19"/11.5") would rub on my 2000 w/out a 5mm spacer...but he has tried them on the newer models and no rubby.

POST 20Original post

Mark, well then "Carlos" is telling you what you want to hear to sell a wheel and doesn't know the 996 line very well then. Let "Carlos" know that PAG/PCNA never fitted a 11.5" wheel to the narrow body car. The only cars that got anything close to that is an 11" wheel and were the wide body cars and the GT3/Narrow Body cars with the accommodating offset. FYI....the rubbing that was avoided with a 5mm spacer could have been avoided with the proper offset. There is no reason to need a spacer with "custom" wheels. By the way Mark, are the wheels in your sig (which look great in black by the way!) ones from "Carlos"? If so, what are the specs on them (wheel and tire as well)?

POST 21Original post

Quotes source post: 5407295

They are the one's I bought from Carlos @ wheeldynamics.com. They are 997 Carerra Sport wheels (knockoffs ...painted black of course). They are 19X8.5 et56mm 23.5lbs w/235/35/19 and 19X11.5 w/ et67mm 28.5lbs 315/25/19. I do have a 5mm spacer on the rear. Again, he says he has fitted many 996's and no spacer required on the 2001-2004 model. Mine are about as tight of a fit as you could get but I have had them on for several months without rubbing.

POST 22Original post

Personally, they look to me like they stick out too far in the rear. When a GT3 wheel (11" et63) is about as tight as you want to go in the rear of a narrow body 996, to add .5" of wheel AND a 5mm spacer it's the equivalent (roughly) of adding a 7-8mm spacer to the rear of a factory GT3 wheel. Not going fit properly. You needed to run the 5mm spacer probably to clear on the INSIDE. Very simply, a 11.5" wheel is NOT correct. Regardless, if it is what you like that is ALL that matters. They look great in black by the way

POST 23Original post

I have a 315/25/19 in the rear so I don't think you will have too much problem running the wheel with a normal size tire such as the 285 or 295. I do think you have to be more careful if you start getting into the 315/30/18 as the height of the tire may become an issue.

POST 24Original post

Quotes source post: 5401513

Ditto - 2003 C2 Cab with 285-35-18. No clearance problems and they grip like nothing I've ever experienced... -

POST 25Original post

I have 11.5" Champions on the rear with 315/25/zr19 tires. No spacers. Everything fits perfectly. No rub, no sticking out, just sticky on the road. 1999 MY.

POST 27Original post

Quotes source post: 5414772

you should talk to Lowstro on this forum, I think he's running 14 inches back there

POST 28 / ORIGINAL POSTEROriginal post

I finally got the wheels today. my decision now is size of rear tires. 285 30 appears to be standard, but will 285 35s also work? I think they may fill up the wheel well in the rear better than the 285 30s, but I don't want to have a rubbing issue. BTW, the wheels look great. I knew they werent factory wheels, but im not racing the car and my driving habits shouldnt present a problem. They are heavier, I haven't weighed them yet, but weight on boxes with packing was listed at 73lb, one front, one rear, 3 boxess, packing, etc. I will weight them tho before putting them on.

POST 29Original post

35's will work. Just understand what comes with a larger RD. You will just have a higher sidewall (more roll) and your gearing will be increased (longer gears).

POST 30 / ORIGINAL POSTEROriginal post

Quotes source post: 5406319

I did pick up on the correct offset. i got the 63MM offset for my C2. My question is whether 285 30s or 285 35s would be best suited for the 11 inch rims. I have 275 35s on my car now with 10 inch rims and they look a lot better than the 265 35 stock size, and IMHO better than 285 30s. They just fill out the wheel well better. What I don't know is if the 285 35s will present any problem I don't know about, given the wheels are 11 inches wide with a 63 offset. The tire calculator I used shows the dimensions within the 3% range of recommended maximum difference from stock, but just barely. That calculator does not factor offsets or wheel widths, though, just overall tire dimensions and their effect on braking and speedometer accuracy.

POST 31 / ORIGINAL POSTEROriginal post

BTW, I put Goodyear F1 GS D3s on my car the last time. I have more than 25k on the tires and 5mm left on the rears. They have a 280 wear rating, but have lasted twice as long as any other rears I've had on the car. I don't know if my driving habits have changed significantly or if these tires just wear a lot better. They are just now getting overly noisy. I'm going to go back to Pilot sports this time, just too see if they wear out as fast as the last set I had. The GYs have great wet grip. If anyone wants a reasonably priced tire and isn't hung up on the N rated tires, these are an excellent option. I will put them on my wife's 968 if we ever wear out the tires that are on it now. At about 1000 miles a year, it may never happen

POST 32Original post

Well, to answer your question, neither is better for a 11" wheel. The optimal size tire for that size wheel is a 305/30. But the best in it's place is the 295/30 which is WIDELY available.

POST 33 / ORIGINAL POSTEROriginal post

Quotes source post: 5412867

ESTN, Thanks just what I wanted/needed to hear.

POST 34 / ORIGINAL POSTEROriginal post

LVDELL, wil 295 30s work on a narrow body?

POST 35Original post

Absolutely! That is the stock size on the GT3 which is a narrow body ps. I have run the GT3 wheels on my wife's CAB and they look AWESOME!!!!

POST 36Original post

geez, and I thought my 10"s were stream rollers!

POST 37Original post

Quotes source post: 5439702

Check post #2 in this thread.

POST 39Original post

Quotes source post: 5440177

[Image-only post; no author-written text. Original image references:] https://rennlist.com/forums/images/smilies/smile.gif

POST 41 / ORIGINAL POSTEROriginal post

Thanks everyone.................295 30s it is. I'll get them put on tomorrow assuming they are ins stock. Shouldn't be a problem in Atlanta as that is pretty common tire

POST 42Original post

smshirk, any pics of your ride with the new GT3 style wheels? would love to see it as i'm trying to make a wheel decision myself.

This is a source reference. Confirm exact model applicability in the original material.