Just ordered a set of the Sumitomo HTR Z III for the C4s...

Let's see if these are the cat's meow. I currently have a set of Michelin Pilot Sport 2s and I was not looking forward to spending $1300 or so on a new set of tires and frankly, it's amazing that these came in at $650 including the $70 shipping charge from Tire Rack!

wow,... what is the forums general opinion of them ? I have not been following the tire posts..

In reading, they're every bit as worthwhile as the more expensive tires like the Potenza S02 and Tire Rack has a decent overview of them w/ ratings. They seem to be just fine for daily driving and more. 2 lbs heavier than the michelins, but then again, no one is handing me a factory drive for the porsche cup at the end of my win to the office. http://www.6speedonline.com/forums/9...sumitomos.html I'll find out and update. Right now, the cords are showing on my rears. http://www.tirerack.com/tires/tests/...ay.jsp?ttid=93

wow, read most of those while drinking beer...I better eat because I am feeling the beer... Great thread over there... I need tires and might opt for them too... Thanks Ed

Count me in as well... getting a set to replace the worn out Michelin. Feedback so far has been great.

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I'd love to hear some feedback when you have them. I've got about 6,000 on my PS2's (only one track day). They still look pretty good. I'll be driving her a lot more probably starting late this month and based on history I'll probably be looking sometime in the summer.

I put mine on about 3 weeks ago... they are a much more quiet ride than the P-zero's I had on before. I used them on the track during the heavy rain DE last weekend, but since it was my first DE I don't have anything to compare against. For normal road use, so far I really like them and you absolutely can't beat the value! Under $800 installed for a complete set of 18"!

Interesting, I can get all four for the price of two.

i opted for the sumi HTZ IIs. only $302.19 shipped for a pair of 265/35/18.

Can anyone compare these to S-02As? I didn't see anyone comment on these in comparison. My rears are going to need replacing soon (front's are fine) so I was thinking of just getting more of the same.

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give me a couple of weeks. FWIW, the michelin PS2s were better than S02A, which were better than Contisport Contact 2. The Sumitomo will be my 5th set of tires (2 times, I got the S02A). I have 82K miles. BTW, I LOVE your black painted wheels. I so want something like that but holding out for the GT3 wheels painted black. Although I want a gloss paint on the actual barrel with semi-gloss on the spokes.

Ok so I just installed these a few weeks ago and had them at the track as well. To boot, I used to have a set of II's and HATED them. Loudish and went greasy after two laps. Terrible tire and got rid of them fast. The III's on the other hand thus far have been quite nice. Low noise, decent grip in the corners, and on a wet and cold track was pretty competent. Not sure on dry track with heat yet, but thus far am very encouraged. I went through two sets of rears in a year on the Continentals and at 700 for two, getting a comparable and perhaps even better tire that costs 700 for all 4? Not too bad. I may not win the DE Cup this year, but the F1 scouts stopped knocking on my door a long time ago

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I look forward to hearing your report. The thread on 6speed was great because he described his experience over many thousands of miles. Be sure to check in periodically... The wheels are actually painted semi-gloss. In that photo, I think the PO had them waxed up pretty good. I will hopefully get a chance to detail them soon and we'll see how they clean up. Personally, I'm lusting after a set of Champion Motorsport wheels. I guess I'll put that on my wish list along with the stereo upgrade...

good threads.... I need new rears (running Pirelli Pzero). The fronts are practically new. Should I get the Sumitomo HTR Z III or just get the Pirelli rears... Seems like they may be better than the Pzero. The Pzeros only last about 5K miles for me (with DE's) and the sumi's will prob last longer. Opinions?

There is also a couple of decent threads here about the 3s with IIRC nothing but positive feedback.

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FWIW I waited until my fronts were mostly gone until pulling the trigger on an entirely new set from a cost-savings perspective. I would not mix and match.

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not mix and matching.... I will get a full set of Sumi's, as for price they are just about the same price for 2 rear Pzero and 2front and rears of sumi's.

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+1... I did the same, so I could get a complete set

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Ferdinand, You drove my car after the brake job last summer. It had on sumi IIIs; 235 fronts and 295 rears. I would post your old fronts for sale in various car forums. I know E46 M3s can run the same sized tires as our fronts. Corvetts also but again its their front tires. People pick them up if their fronts go flat or are looking for a better price. It took me almost 4 months to get rid of my conti fronts though. I ended up selling it on a bimmer forum dirt cheap...

I'm going to be the contrarian here and say that I see no problem with mixing and matching sets of tires. But at that price you might as well replace all 4.

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+1 For "normal" street driving, it's not detrimental to mix and match tires. I see 2-3 tire brands on cars every day and they seem to get to point A to B just fine. I think it's exponentially more detrimental to see people driving on corded tires or underinflated tires. If you plan on squeezing every drop of performance and fine tune to the way Porsche intended, then, yeah, replace all 4. At that level, it's diminishing returns. ///Michael

11+ pages of reviews. https://rennlist.com/forums/993-foru...-any-good.html

I have these on a DD and haven't had any issues at all. Great tire for the money. Or even not for the money.

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Sounds good... I think Im gonna go this route. I dont want to commit to 3 seasons of wearing down the Pirelli fronts as the rears just dont last at all....

I think my tires will last this summer but they'll be due after that and let me tell you this is GREAT news!

How do these compare to the PS2? I'm going to need new rears after the first round of autocross schools this spring.

I'm this close to buying a set of these...noticed the 295's aren't XL-rated and wondering if any current owners find them to be a little soft or "squishy", since much of the weight is over the rears? I don't intend on tracking these, road use only.

Perfect timing! I need to replace all 4 tires, currently using Conti's, and will be doing some research online for replacement. Thanks for the tip, will definitely look into the Sumi's as well. Probably would make a good choice tire for the unemployed!

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odd, since I was wondering what the XL meant on the tire description. I'm not going to track these either, so it's nice to know that I can put money towards track tires/wheels. I'm sure it'll be ok. This is my invoice. 2 225/40ZR-18 Sumitomo HTR Z III XL In Stock $111.00 $222.00 2 295/30ZR-18 Sumitomo HTR Z III In Stock $185.00 $370.00 1 Sumitomo Warranty Packet In Stock N/C N/C 1 Tire registration card -retail In Stock N/C N/C Some products above selected for the following vehicle(s): Vehicle: 03 Porsche 911 Carrera 4S Coupe Shipping: $64.47 Tax: $.00 Excise Tax: $.00 State Disposal Fund Fee: $.00 Order Total Including Shipping: $656.47

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I got IIs too - 2 weeks ago, it's been raining but I feel snug, so far so good

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i went with the IIs just cause they're rated a summer tire compound vs. the IIIs which are all-seasons.

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No. The IIIs are rated as a "Max Performance Summer tire" .

I recently acquired a 2001 996 cab and need to replace the rear Sport Pilots. The front ones are almost new but I am not sure if I should stick to Sport Pilots and get a new pair or opt for Sumi II's all round. It'll probably cost me the same. None of my tires are N rated and from what I have read on this and other forums it doesn't seem to make that much different. This will be a weekend car with maybe track once a year and never on wet. What would you guys suggest ?

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you're right. confabulated the falken 912s, which are all season. but the IIs have a wear rating of 220 vs. the IIIs which are 300. i may be mistaken, but i take that to mean that the IIs are a softer compound.

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i think there are different opinions about mixing and matching brands and specs. i opted to keep my PS2s up front (which still have 60% life in them) and replace my rears with IIs. but if you're tracking, i think getting all 4 the same is probably best. also, 4 IIs only cost around $600 shipped so i would go with that.

I've got PZeros on thr front and Sumitomo IIs on the rear of my '99 C2 Cab, also have larger diameter anti-sways. The car handles much better than stock, flatter cornering with much less pushing up front. The tires, even mixed feel great and very predictable. They feel best with factory recommended high inflation pressures. I will definately buy the Sumitomos next time all around. I'm probably not the most aggressive driver out there but I'm not afraid to push it occasionally, and I have 8 seasons under my belt roadracing GXSR Superbikes.

I almost pulled the trigger for a new set of Sumi II's just now after reading this thread and the links to the reviews, but I live right on the coast where the roads are wet almost every morning. My '99 C2 is currently on Pilot Sports and needs two rear tires badly (fronts still have 50%+). I read that the Sumi II's aren't too bad in rain, but can anyone confirm or make an alternate suggestion for DD tires for mostly wet roads (no deep water)? I don't track it but I do hit 110+ mph daily. Any advice is appreciated.

Get the Sumi III's. The II's IMHO are crap. I just did a 38 degree downpour kinda weekend at the track and they performed great.

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Thanks Bill. This seems to match what I have been reading. Looks like Sumi III's for me. Now to decide if I'll start with 2 in the rear, and keep the Pilots with 50%+ remaining in the front or go for all 4. My wallet is a bit light after some unexpected expenses so saving $300-400 sounds tempting.

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I get my Sumi III"s this friday. I also decided to keep the front Pilots for now and see how it handles. Will keep you posted.

Quick update. Got the rear Sumi III's today, grip is great and ride feels much more comfortable but I am not hearing the quietness people have been talking about with these tires. I have had this drone that gets particularly loud between 50mph and 75mph which I thought was causes by the crappy rear tires. Replacing these have had no effect on noise. Is the noise source front Pilots, bearing or what?

Just had a new set of Sumi III put on today. Love the way the car sounds and ride, although, only a few miles on them at this point. I'm very pleased at this point, good value.

Just put the Sumi's III on tonight. Great deal from Tirerack. They are going to a DE at Bluegrass in April. You cannot beat the value for the money! Keep you all posted....

Just got mine as well, my front Contis are still good, but I decided to get all four at the same time. If anybody is interested locally on a set of front Contis 2 (60%) they can have these cheap.

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dunno - my IIs are about a month old, have seen both dry weather and rain, good feel, no issues I suspect if the IIs are crap, then the IIIs are too, and probably their whole line up