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YOUR RESEARCH18" Wheel and Tire options/specs for Narrow Body
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Run bridgestone s02a 295/30
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I ran bridgestone s02a 295/30 on this 5 spoke carrera rim.
Leading evidence: 'Run bridgestone s02a 295/30' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace from the old 993 spec 18" (i.e' (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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Some are really good like the Corvette Forum, but others were so bad (not to be named) I actually sold my car and moved on because community support is important to how I run, maintain, repair and modify my cars.
Use 18" turbo twist et50 front and et65 rear wheels
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I have settled on a nice set of used 18" Turbo Twist ET50 front and ET65 rear wheels.
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Some are really good like the Corvette Forum, but others were so bad (not to be named) I actually sold my car and moved on because community support is important to how I run, maintain, repair and modify my cars.
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I just purchased a stock 1999 coupe with stock 17" wheels. I have searched to get some solid answers on options for tires and wheels but must not be searching the right words.
What size and offset are the stock 18" upgraded wheels. What is the best size tire to go with on these 18" stock wheels that would be wider than stock tires but still meets spec for wheel width with no rubbing?
Congratulations on the new purchase! Show us a picture
I got mine all of a week and a half ago. It has later Carrera III wheels, 10" ET58 at the rear and 8" ET57 up front. I will be fitting 7mm spacers to bring the fronts out to where the factory rims would have been.
For tyres I have 225/40 front and 265/35 rear, which I think is as specified by Porsche.
Nice link - thanks. Bookmarked!
The stock 18" sizes for a 1999 are:
7.5 x 18 ET50 and
10 x 18 ET65
If you are buying new wheels I would go with 8 x 18 ET50 on the front instead. It fits the stock 18" tires better and allows you to go to 285 rears (instead of 265) without affecting handling at all. The change from the old 993 spec 18" (i.e. 7.5J) to the new 996 spec 18" (8J) was one of the 2nd gen upgrades. The 8" rim increases the front tire patch just enough to balance correctly with the normal 285 width for the 10" rears. If I remember correctly the offset for the matching rears to the 8" fronts have a ET70 offset instead of ET65. While the gen 2s also have rolled rear fenders I know that many gen 1 drivers use 285 rears with no problems.
In retrospect there may have been a 8J/10J option available in 1999. I recently saw a code label on a 99 with code XRM. That code was for 285 rears. I know that Porsche does not recommend any combination of 10J 285 rears with a 7.5J front rim as the 225 fronts are actually slightly oversize for the 7.5J causing them to have a smaller contact patch and more sidewall flex.
Those are very nice wheels. If I had not just been through an unscheduled surgery I would be calling you. Those are my favorite OEM wheels and I really want to change to 8J fronts. As it is my Porsche fund will be my pay-the-hospital/doctors/technicians/everybody-else-the-hospital-does-business-with fund for quite a while.
How about we allow these photos to do all the talking...
-No rubbing and available in 18" see more at
www.wheeldynamics.com
First up the RS-808 Wheels $1599/set
Next GT3 Replica Wheels SILVER $1499/set PROMO PRICE JUNE $1299/set
Stay with the exact same front. It just fits the rim better and increases the size of its contact patch by a 5th of an inch or so.
The "standard" optional 18" wheel for the gen 1 1997-2001 was 7.5. The standard optional 18" for gen 2 was 8.
The 8s will fit a gen 1 fine and I just found some anecdotal evidence that the 8s may have been available as part of a option package for gen 1s that I had never seen before.
Others will have to verify that.
Either way you can use the 8s on a gen 1 and they will fit the front tires a little better. It will also allow you to bump up the rears to 285 tires in a factory-correct fashion.
FYI, don't be drawn towards the OEM spec wheels, they don't line up with regards to the fender lines of the cars, they are very conservative, you notice this especially if you lower the car one day.
Porsche optioned the following:
FRONT: 225/40/18
REAR: 265/35/18 OR 285/30/18
Personally I think that the 265/35/18 looks more appealing being that it has a larger over-all diameter when compared to a 285/30/18.
I agree although I'm not really fond of either. The 265 looks stretched to fit the rim and the 285 looks too small in the wheel well.
I also prefer the ride of the 265.
I found these aftermarket that look like the 18" turbo Twist wheels. I don't know the quality but they are manufactured in Italy. What size front tire can I use for a stock 1999? I don't think 225 is wide enough for an 8.5" front wheel.
COLOR:
Silver
Size:
18x8.5" fronts and 18x10" rears
Bolt Pattern:
5x130
Condition:
Brand New High End Replicas made in ITALY.. NOT CHINESE JUNK
Offset:
front 52mm Rear 65mm
How can the 285/30 look smaller? It is 24.9" in diameter verses 25" for a 265/35. I don't think my eye is really calibrated to see 1/10 of an inch.
Actually I just looked at some other 265/35 brand tires. I guess the Potenza I picked happen to be kind of small at 25". Others such as the Conti DW is 25.3" So it would be more like a 0.4" difference which my calibrated eye probably could see. I guess there is more diameter difference between manufactures of the same size than I thought.
I just found out the 225/40/18 is 25.1" in diameter and a 245/35/18 is 24.8" diameter. That is pretty close especially when you consider a 285/30/18 is 24.9". I wonder if a 245/35/18 on this 8.5" front wheel would cause any rubbing? That would be a good combination along with the 285/30/18 for maximum traction.
Is this just for looks or track use? For looks, my favorite tire is the pilot super sport and the taller 285/35 18 looks better IMO. If your buying wheels I'd pick the tire you want than the wheels accordingly. You can fit huge tires out back with no rubbing. Up front I'd say 245 is about as much as you can do before it gets a little tricky. But it's dependent on suspension, alignment, offset and even actual width of tire per labeled size varies between manufacturers. I think 225 would look perfect on a 8.5. 245 will be very squared off but I tend to like a bit more rubber too. But on the other hand the 225 may drive a bit nicer.
I had 275 NT01s up front but didn't like it. I think it could be made to work well but not for a daily and I didn't like running with no tender spring. There isn't a 255/40 or 35 NT01 for 18" wheels.
If I went back to street tires I would likely run 255s up front. There's a few tires I like in good sizes.
This is for a weekend sport driver so I like the look factor but want performance. If I went with the 285/35 what size do I need in front? Anyone use this setup?
Found some nice 18 turbo twist. They have near new tires 235/40/18 and 265/35/18 pilot Supersport. I know the front should only be 225/40. So yes a little strange. But the overall diameter is 25.4 front and 25.3 rear. Is this okay to run or will I risk rubbing or abs codes on a stock 1999?
Once you go beyond stock/optional sizes I'm not qualified to comment but I will anyway. First, be careful of the balance between front and rear tires. These are rear-engined cars and very susceptible to becoming unbalanced, Wider is not always better.
What good are looks if your car handles like a John Deere instead of a Porsche? 265s and 285s, on a 996, work best with 225 fronts under regular driving conditions. A wider front will look better but handle worse. Porsche qualifies tires for a reason they know the suspension geometry. If you are racing, all bets are off but if you need a racing-only setup on the street, please stay out of my neighborhood.
Second, I don't remember if you ever mentioned if you have a C2 or C4 but the difference in diameter between the front tires and rear tires must be very small for a C4.
If these are the wheels you are looking at then you might want to ask about the weight of the wheels, they do appear to have a weight disadvantage over a stock OEM set.
http://www.ebay.com/itm/Porsche-986-...-/161823071651
We offer oem wheels completely refinished back to new again. We have a set up right now at $1599
I tend to prefer OEM but don't discount what Wheel Dynamics said. There are many good after-market wheels but go to a reputable shop to be sure because there is also a lot of junk out there.
Don't forget that some wheel makers are also OEM suppliers for Porsche, like BBS or Fuchs. I would never turn down a nice set of HREs or Champions... list goes on and as soon as you talk R-compound tires you need after-markets because most street wheels aren't really strong enough for repeated track use.
I would however stick pretty close to recommended wheel widths and tire sizes without the help of someone like Wheel Dynamics that has real world, practical experience with the ride qualities of different sets.
One thing no one has mentioned is ride. Be prepared for a difference in ride quality. The 18 will be harsher. Back when these were new cars one of the magazines compared the car on 17s and 18s. There verdict was they preferred the 17s for everyday. A side benefit is reduced unsprung weight.
My first 996 had 17s and this one has 18s. I preferred the ride on the 17s 80% of the time. The look, will the 18s are better.
I have settled on a nice set of used 18" Turbo Twist ET50 front and ET65 rear wheels. I have to say Kudos to this forum. This is my first Porsche. I have had and been a big part of the following forums: Corvette, LS1/GTO, RX8, Jeep SRT8 and several others. Some are really good like the Corvette Forum, but others were so bad (not to be named) I actually sold my car and moved on because community support is important to how I run, maintain, repair and modify my cars.
I am very impressed so far. Here I am one of the Newbies and you all are so helpful. So THANKS A MILLION everyone!
I have to say this has been a great experience so far. I hope to learn enough that I can also be supportive like all of you.
[QUOTE=Wheel Dynamics;13358161]
How about we allow these photos to do all the talking...
-No rubbing and available in 18" see more at
www.wheeldynamics.com
First up the RS-808 Wheels $1599/set
Gorgeous. But the website says 19" and up. Typo?
You could go up to 235/40 front without any issue.
Rear 295/30 would work too. However it is on the wide side for a 10J rim. It also depends on the specific geometry of the tire itself. Some brands will settle better then others.
I ran bridgestone s02a 295/30 on this 5 spoke carrera rim. You see the tire shoulder is not completely square. Now running Yokohama 295/30 AD08r and it is a pretty straight fit.
Something you might be interested in?
All of our wheels are custom built per order so you can order different offsets and widths.
RTF Track Spec-5 <br/>Size: 18x8.5 F / 18x11 R <br/>Finish: RTF Brush Titanium <br/>Car: 996 Turbo
RTF Track Spec-5 <br/>Size: 18x8.5 F / 18x11 R <br/>Finish: RTF Brush Titanium <br/>Car: 996 Turbo
[QUOTE=llis;13366495]
We have both the 18" and 19" option, the 18" out of the box will keep you at $1599 so you're not blowing $5,000 on a set of wheels.
If you are able to blow that kind of cash on wheels then we can also offer a custom build with other styles....
A member sent is these pictures showing our lightweight 18x8 and 18x11 RTF Track Spec-5 on this beautiful 996 Turbo S
All RTF wheels are custom manufactured using aerospace grade 6061-T6 forged aluminum per order. This allows us an advantage in being able to offer any offset, width and finish when you order any of our RTF Track Spec or Modular series.
RTF is now currently offering media discounts on all Modular Series wheels this promotion is limited Porsche chassis.
If you have any questions on any of our designs please feel free to send us an email directly to
[email removed]
or a PM.
RTF Track Spec-5
Size: 18 x 8 / 18 x 11
Finish: Satin Black w/ PCCB Yellow Pinstripe
Car: 996 Turbo S
RTF Track Spec-5
Size: 18 x 8 / 18 x 11
Finish: Satin Black w/ PCCB Yellow Pinstripe
Car: 996 Turbo S
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