I was having traction and rollover problems at the last autocrossing. I think I'll have traction now Some like deepdish wheels, I like deepdish tires.

 

dude... what size are those? 225? 255? you really should get a wider wheel tho

 

They are 21.5x8x13. I would get a wider wheel, but that would cost money, which I do not usually have, lol.

 

lol...theres going to be tire flex like a motherfuc*er... good job man!

:AA:

 

I'm hoping there isn't too much sidewall flex. They have really stiff sidewalls, but with a contact patch that large there is bound to be some rollover.

 

i just hope its not your car

 

That looks dangerous, with that much grip on the road, and that much stress on the beads, a hard corner could peel the rim, and if the metal hits the concrete just right it could catch and damage something or flip you. this is of course the worst possible scenario and it is unlikely but there are reasons we don't usually run setups like that.

 

You'll peel that tire off the rim the first hard corner you take. Good luck. Make sure you have an extra set of wheels to get home on at the autox.

 

I'll see your 8.5 and raise you 2 more...



21.5x10.5x13

I don't know about yours, but mine are old road race tires with beads made to fit narrow wheels. The sidewalls are incredibly stiff. I've only raced on them once for fun at an autocross.

 

I remember when you showed up with those monsters. That was one of the wildest tire setups I've ever seen. But yeah, you can tell that they're made to fit that way. Sure look weird though...

 

The sidewalls on mine are verrrry stiff. I don't get what you guys are talking about that they are dangerous, I really don't think so. I have this posted at with the autocross club I'm with and they aren't mentioning any danger, they are just helping me with what PSI to run at.

I can't imagine how much rub you get with those 10.5s man, I have about .25" of rub on my strut with these I have to take care of.

 

Do they know it's on a 13X5.5?

 

Wheel lip angle to tire bead angle has limits.

 

Yeah, and one of our senior members said exactly what bshusted said-they are designed to fit narrower wheels. None of the guys there said they'd be afraid to run them. Damn, now I wish I got 10.5s, lol. I'd need a 3" spacer on the front though.

 

I only have 2. I never ran them on the front, just on the rear. I used a 5/8" spacer to make sure I would not rub on the inner fender.

 

Are you really going to use drag slicks for autox

 

Hey, sticky rubber is sticky rubber....

Problem is, with that much traction in the rear I'll bet she'll understeer like a bitch.

 

Not drag slicks my friend, they are road racing slicks.

As it turns out, there are wide hoosiers made to fit small rims, and wide hoosiers made to fit wide rims. These are the ones made to fit wide rims, unfourtunately. I'm shipping them back and getting them exchanged with the ones made for narrow wheels. They will be 20x8, same width but less height.

 

i thought it looked slightly wrong... not that i have a trained eye or anything.........................

 

it sound's like you did your homework on this one...let us know how they handle when you get them back..

:AA:

 

The Hoosier 9.5 slicks are actually a little over 10 wide and they are designed to fit on a 7" wide rim. The 8.5 are probably at their narrowest rim allowed on those stockers. They are called cantilevered slicks, designed for classes that have maximum rims widths but could really use more tire. Shoot for about 26-28 psi hot, if you get any temp rise at all.

 

Sorry to exhume this thread, but did you end up needing a spacer with the 20x8 instead of the 21.5x8?