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      09-17-2013, 07:16 AM   #1
E92inSG
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Ok I'm about to bite the bullet and splash for a set of semi slicks.

My rim setup is TE37SL 18x9.5 front and 18x10.5 rear.

Currently on hankook R-S3 265/35 and 285/35

Will most likely be going for Pilot Sport Cups for my next competitive event.

I can either go 265/35 and 295/30 or I was also thinking of running a square 285/30/18 to provide a bit more grip upfront (slight understeer currently) and also maybe extend tire life by rotation (not a huge concern)

What would you hardcore track guys recommend?

1) stay with 265/35 and 295/30

2) go 285/30 square on staggered wheels

3) go 285/30 front and 295/30 rear
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      09-17-2013, 07:33 AM   #2
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Edited 1st post
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      09-17-2013, 09:40 AM   #3
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Definitely option 2 or 3. Wider tires up front= more overall grip for sure, and likely better balance. 275 square on 10's works well.
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      09-17-2013, 09:52 AM   #4
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option 4- square set of tires and wheels. if you have staggered wheels and square tires means you cant change front to rear at the track to even wear out which is the advantage of having a square set in the first place.
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      09-17-2013, 10:04 AM   #5
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Like I said for me the advantage of square setup is more of the additional rubber in front vs the possibility of front to rear rotation.

I definitely won't be getting another set of wheels so option 4 is out

So
With that outta the way,
You guys are saying I shouldn't run square tires on non square setup?
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      09-17-2013, 10:22 AM   #6
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yes squared, I ran staggered and you can tell the car twitches a bit, so I went with 18x10 apex with 285 tires and the car feels planted!
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      09-17-2013, 10:28 AM   #7
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So there shouldn't be any issue running square tires on non square wheels yah?
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      09-17-2013, 11:08 AM   #8
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no you can do it but might want to think about 275-35 square as you are putting a pretty wide tire already on the front 9.5 rim.
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      09-17-2013, 11:11 AM   #9
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MPSC doesn't come in 275/35

anyway i found some good info from michelin themselves so looks like i'm gonna stick with 265/35 in front and 295/30 rear

FYI



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      09-17-2013, 11:17 AM   #10
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265 shows fits 9-10.5? i ran advan ad08s in 265-30-19 as my track tire for a time and still think the benefit of square front to back outweighs slight decrease in tire width in the rear. your entry and mid corner speed will be better and handle more neutrally and exit will only suffer slightly.
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      09-17-2013, 11:35 AM   #11
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Hmm so your saying I should decrease rear width? I always thought the way to go square was to increase front width instead.

Will do a bit more research
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      09-17-2013, 11:58 AM   #12
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Why PSC? I think there are far better R-comps for cheaper. I had them once, never bought them again.
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      09-17-2013, 12:06 PM   #13
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+1. PSC are not nearly as good as BFG R1
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      09-17-2013, 12:06 PM   #14
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Quote:
Originally Posted by swartzentruber
Why PSC? I think there are far better R-comps for cheaper. I had them once, never bought them again.
What would you recommend?
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      09-17-2013, 12:11 PM   #15
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Quote:
Originally Posted by Groundpilot
+1. MPC are not nearly as good as BFG R1
I'm not allowed to use straight grooved semis in my class.
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      09-17-2013, 12:14 PM   #16
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Get Hankook TD's. They are worlds better than PS Cups (or R888's). I just ran them last week and I'm in love with these tires. They come in 265/295 as well (that's what I run). Feels like and endless amount of grip.
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      09-17-2013, 12:30 PM   #17
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Quote:
Originally Posted by radiantm3
Get Hankook TD's. They are worlds better than PS Cups (or R888's). I just ran them last week and I'm in love with these tires. They come in 265/295 as well (that's what I run). Feels like and endless amount of grip.
That's the only other alternative I was considering.

Z221.

So u ran both and the TD's were noticeably faster?
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      09-17-2013, 03:55 PM   #18
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Quote:
Originally Posted by E92inSG View Post
I'm not allowed to use straight grooved semis in my class.
try nt01. comes with thread.
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      09-17-2013, 05:00 PM   #19
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Quote:
Originally Posted by E92inSG View Post
Hmm so your saying I should decrease rear width? I always thought the way to go square was to increase front width instead.

Will do a bit more research
I run 285/30/18 TD's (squared) on TE37SL 18x10.5 squared. Fits perfectly, no rubbing, no need for spacers, etc.

And, 275/35/18 NT01's (squared) on TE37 18x10.5 squared. Works great too.
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      09-17-2013, 05:56 PM   #20
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What do a set of TDs run for in those sizes in USA?
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      09-17-2013, 05:57 PM   #21
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Quote:
Originally Posted by E92inSG View Post
That's the only other alternative I was considering.

Z221.

So u ran both and the TD's were noticeably faster?
The cups were horrible. And once you pass the fairly low limits of grip they just give out from under you with little warning.
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      09-17-2013, 06:29 PM   #22
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Quote:
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What do a set of TDs run for in those sizes in USA?
$1,300 or so.
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