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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > Track Day Rims/Tires



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      02-14-2008, 01:23 PM   #23
leftcoastman
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Quote:
Originally Posted by DrDomer View Post
Are the Victoracers you are mentioning Kumho V700 VictoRacers 255/40ZR17? They are $173/tire plus $15/tire to heat cycle them. What if you don't want to run "track tires" but just a set of high performance summer tires? I'm looking to save some cash. Wondering about the Sumitomo HTR Z III's in 255/40 17 for $104/tire, or the Sumitomo HTR Z II's for $85/tire, or the Dunlop Direzza's for $110/tire, or the Kumho Ectasa's for $103/tire.

Also need to see if these fit my 17" winter wheels. Thanks in advance.
Yes, those are it. I heat cycled them myself on a medium speed canyon run. I'm on the 5th day (80-90 minutes per day) and they are still fine.

Three days on street rubber and they were toast, so the economics work with race rubber. Granted, if you haven't spent ~5-10 days on track, I'd stick with street rubber, it's much more predictable.
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      02-18-2008, 02:58 PM   #24
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Thanks. I'll be only doing a couple of HPDE's per year, so I might just get the cheaper street tires. I'll be spending too much time on my CRG/Rotax TAG Kart going 80mph 1" off the ground.



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Originally Posted by leftcoastman View Post
Yes, those are it. I heat cycled them myself on a medium speed canyon run. I'm on the 5th day (80-90 minutes per day) and they are still fine.

Three days on street rubber and they were toast, so the economics work with race rubber. Granted, if you haven't spent ~5-10 days on track, I'd stick with street rubber, it's much more predictable.
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      02-18-2008, 03:04 PM   #25
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Originally Posted by DrDomer View Post
Thanks. I'll be only doing a couple of HPDE's per year, so I might just get the cheaper street tires. I'll be spending too much time on my CRG/Rotax TAG Kart going 80mph 1" off the ground.

Get the Bridgestone RE-01Rs!
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      02-19-2008, 10:52 AM   #26
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Falken 615's are cheap, have a good performance tread block design and hold up pretty good at the track.
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      05-08-2008, 05:57 AM   #27
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I'm considering 18" Volks RE30 for my e92 335i, since they are very light and very strong (forged). I'm thinking of Toyo R1R 255/35/18 rubber. Very sticky. Toyo typicaly saves weight than have a strong tirewall. That is why I'm thinking of running them at the width of 9.5" et35 instead of 8.5" et35 in all corners. Based on the info below, it seems that basically 8.5" should fit in front e92, but 9.5 might not, although the tire width is the same 255. Is it the wheel or is it the fact that the tire is a bit wider because it is stretched on a wider wheel? Is it tire or wheel that would hit the suspension? I have stock suspension now, but considering options for upgrading without dropping too much (e.g. KW3 at the highest possible settings, but it will be slightly dropped still. Or Tein Euro Damper with less drop.)

I could order a pair of 9.5" wheels and a pair of 8.5" wheels and still run 255 in all corners, if it is needed to get them fit. That would also give a chance to run 225 in front. How much do you think it would make a difference to run 255 on 8.5" vs 9.5"?

Btw, why are people saying that staggered cannot be circulated? I would think circulating would really be the cure for the understeer... So one option would be to circulate the rear to front at the track since the fronts take the heat there and change them back for the street.

PS. Toyo R1R are wide for their size.


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Originally Posted by sg335 View Post
We have wheel and tire fitment information in at least six other threads. It would be helpful to keep it in just one. Why not keep it here under "Track Day Rims/Tires". Anyone want to summarize what we have so far in one post and then others can copy and add to the same post?

It appears that 8.5" widths with 32-40 offsets have no problems front or rear. 9.0" widths run into problems in the front. A 40 offset in a 9.0" may come in contact with some coilovers and the stock strut without a 3mm spacer. ET32-35 is a better fitment in the front, but negative camber of at least 1.5 - 2.0 is required with the ET32 to eliminate any rubbing in the front. Rear can accept larger 9.5" widths and is not as sensitive a fitment as the front, but offset cannot be ignored there.

List you wheels, offsets, and tires here:

Enkei NT-03 18x8.5 ET38 w/ Nitto NT-01 245 40 18 at all four corners.
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      05-08-2008, 09:44 AM   #28
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Will all 255s fit on all 8.5"? Or does it depend on the particular wheel and tire?
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      05-08-2008, 10:26 AM   #29
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I think 245s will fit..not sure about 255..it all depends on the the tire and wheel offset. I personally dont want to get stuck with something that rubs, and I cant return them.
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      05-10-2008, 09:46 AM   #30
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Got a new set up. A slight tweak on Todd and Left's setup: Kosei K1 (17x8.5), Yokohama ADVAN A048 (245/40). Should arrive in time for my next track day on Friday.
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      05-10-2008, 10:00 AM   #31
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Kosei K1 17 x 8.5 wrapped in Bridgestone RE-01R 245/45ZR17
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      05-10-2008, 06:50 PM   #32
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Quote:
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Kosei K1 17 x 8.5 wrapped in Bridgestone RE-01R 245/45ZR17
Is there a reason you opted for the 245/45 vs the 245/40s?
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      05-11-2008, 08:58 AM   #33
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Is there a reason you opted for the 245/45 vs the 245/40s?
+1 // I'm wondering the same thing
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      05-11-2008, 09:32 AM   #34
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I remember reading that he said they were much cheaper for the 45 aspect.
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      05-11-2008, 09:35 AM   #35
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Found it! In this thread that he made Kosei K1s and RE01R


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Originally Posted by longodj View Post
I decided to go with the classic Kosei K1's in 17x8.5 wrapped with Bridgestone Potenza RE-01R in 245/45/ZR17. I would have gone with 245/40/ZR17 but they were $60 more per wheel.

-Dave
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      05-11-2008, 10:28 AM   #36
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But they are also taller..and more likely to rub.
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      05-11-2008, 11:40 AM   #37
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But they are also taller..and more likely to rub.
Its the same thing as the people who run 245/35R19. I have seen this in person, only rubs at full lock and backing up on the oil cooler ducting.
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      05-11-2008, 01:41 PM   #38
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I would also go with 17's if they fit - and use the same size all around. like 255's at each corner.

I perfer to change the tires in the comfort of my own garage and drive on the tires to the track. and not mess with the interior of the car.
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