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Old 10-30-2002, 12:03 PM   #1
boka
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Default track tires?? list your size and setup...

What size tires do you guys use on the track? For racing or lapping days? I searched a bit and didn't find much... I saw that gary sheehan uses 17" subzeros, but I didn't see any tire sizes listed on his site. Most of the subies at the track events I've been to are running 225/45/17's or 225/50/16's... Has anyone tried 245's or larger? Have there been many issues? I know this will vary with wheel offset and suspension setup, but I'd still like to know the widest tires someone has run at the track without difficulty??
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Old 11-03-2002, 06:09 AM   #2
Joel Gat, 1.8L
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Hello,

Sorry about the delay in answering... this thread fell off the radar screen too quickly! Anyway, we use 225s and we had to roll the fenders in to avoid the 225s from hitting. Not only that, but we had to sledge-hammer the inside of the fender wells (ie, parts of the shock tower) to get the 225s not to hit. But then again, we're way more slammed than anyone reasonable. We had to bend the chassis seam out of the way of the axle because of how low we are.

I know some people claim to be running 245s with no problems, but frankly I don't see how you can run more than a 225 without it touching a whole bumch of stuff under compression in the turns.

Joel Gat
Crew Chief
Sheehan Motor Racing
http://www.teamsmr.com
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Old 11-03-2002, 10:44 AM   #3
HoRo1
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I have 3 different approaches
225/50/16 Toyo RA1s on 16X7 Raceline RL7s - had to nix those because I put bigger brakes on. Rubbed on my rear coilovers under compression
225/40/18 Pirelli P Zeros on 18X7.5 P1s. Rub on my rear coilovers under compression, but less than above.
225/45/17 Victoracers on 17X7.5 Sub Zeros. Never tried these - they're sitting in my garage waiting to be used or sold depending on...

Re the rubbing issue - can be addressed by using spacers and/or adjusting rear camber. Rubbing against the top of the front wheel arch (!) is an issue with RA1s because they are a tall tire. On a sedan you should be able to use 235 tires, 245s might be pushing it though.
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Old 11-03-2002, 02:24 PM   #4
Joel Gat, 1.8L
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Hello,

HoRo, what size brakes did you unsuccessfully fit under the RL7s? I've been curious about whether the 16x7 would fit over soemthing like the stoptech brakes. I know my 15x7s fit over up to 300 mm brake kits. I figured the 16 would fit over some pretty good size brakes...

Joel
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Old 11-03-2002, 03:06 PM   #5
HoRo1
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16X7s fit over my Suby 4 pots, but had to go when I put on Stoptech. Rotor diameter too big.
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Old 11-03-2002, 03:25 PM   #6
jmott
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I'm currently running 224/45/17 falken azenis on 17x7.5 SSR Competitions. I'm a bit lower than stock with pink sti springs, about 20-30mm, no rubbing issues at all
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Old 11-03-2002, 08:13 PM   #7
IXLR8
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225/50/16 Toyo RA1's at full tread depth on the stock (6.5 inch) rims, with the Pink STi springs and camber plates for about 2.5 degrees of negative in the front... no rubbing, great stick.
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Old 11-04-2002, 11:16 AM   #8
Joe Longworth
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At one point in time I was running with this setup:

GAB Revo Stroke 2 coilovers with about 1.25" drop, -2.5 degrees camber front, as much negative in the rear as we could get, zero toe.

I had Toyo Proxes RA1's in 205/50/15 on stock legacy alloy 15" rims from tirerack (about 50$ each). Wheel weight is about 13 lbs if I recall correctly.
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Old 11-04-2002, 04:14 PM   #9
mav1c
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I am running 225/45/17 Kuhmo V700's on 17x7.5 Rota Subzeros (+48mm) with Tein Coilovers. I had the fenders rolled when I was running the Falken Azenis in the same size, but the Kuhmos are actually thinner than the Falkens.
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Old 11-04-2002, 04:18 PM   #10
Joel Gat, 1.8L
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Hello,

Azenis are the greatest dry road going tire... but have you ever weighed one? I think they're twice the weight of any street tire and probably 2.5 to 3 times the weight of a good race tire

Joel, with nothing useful to add...
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Old 11-04-2002, 04:20 PM   #11
jmott
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Quote:
Originally posted by Joel Gat, 1.8L
Hello,

Azenis are the greatest dry road going tire... but have you ever weighed one? I think they're twice the weight of any street tire and probably 2.5 to 3 times the weight of a good race tire

Joel, with nothing useful to add...
hehe, yeah, my azenis were way heavier than my wheels.
the dicsount tire placec was amused
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Old 11-07-2002, 12:23 AM   #12
wrxken
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Default hi

I run dms 40m coil overs with 225# springs
car lowered and corner balanced use roto sub zero
17x17.5 45 offset with dunlop sp9000 225/45/17
had sometire rub had the rear fenders rolled
flat with inside of fenders NO MORE PROBLEM
also run kumos race tires 225/45/17 on roto sub zero 48 off set 17/17.5 with fender lip flat will up grade to toyo race tire 235/40/17

it will fit no prob
Ken
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Old 11-07-2002, 12:36 AM   #13
WagonMonster
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Quote:
Originally posted by Joel Gat, 1.8L
Hello,

Azenis are the greatest dry road going tire... but have you ever weighed one? I think they're twice the weight of any street tire and probably 2.5 to 3 times the weight of a good race tire

Joel, with nothing useful to add...
I was just about to buy some Azenis for Auto-x, but after your post, I may go with some Real race tires. Since I have too many mods on my car I have to run in modifed anyway.
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Old 11-07-2002, 01:40 AM   #14
boka
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Thanks for the info guys. Right now I'm running 225/45/17's for street tires and I just ordered the same size for my race tires. I'm using rota tarmacs for my street wheels and subzeros for my track wheels. I've yet to see a WRX with something wider than 225's. I was hoping someone would've had good experiences running larger tires, but it seems 225's are about right for our cars...
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Old 11-07-2002, 10:29 AM   #15
jmott
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I should be running 235/40/17 kumhos next season for autocross

I'll keep ya posted



Quote:
Originally posted by boka
Thanks for the info guys. Right now I'm running 225/45/17's for street tires and I just ordered the same size for my race tires. I'm using rota tarmacs for my street wheels and subzeros for my track wheels. I've yet to see a WRX with something wider than 225's. I was hoping someone would've had good experiences running larger tires, but it seems 225's are about right for our cars...
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Old 11-07-2002, 01:29 PM   #16
dwx
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Next year I'll probably run 225/45/17 or 235/40/17 on some SSR Comps which are my street wheels currently. I hate to use the SSRs just for autox/track stuff but I think I'll buy some Rota Attacks to use for my street wheels. Like jmott I'll probably go with the cheaper Kuhmo Escta race tires since I plan on doing a ton of autox next year and don't feel like buying Hoosiers. I don't think I'll be competitive enough in SM next year for it to matter. I may sell my 17x7.5 SSRs though and get some 16x7.5 ones instead.

Phil
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