z06801

Someone in the general C5 section was considering a6s on the front and r6s on the rear of a high HP c5 can't this cause a potential dangerous oversteer situation on the street?

wanabgts

I wouldn't recommend running a6's on the street at all.

The theory in general doesn't make much sense tho unless for autox use he wants to save some tire wear in the rear.....but its not the peak grip that is all that different between the tires its when the tires REACH peak grip. On my car I know by the time I got the rears fully up to temp the front would be overheated.

Zack

z06801

thats what I mean, at street driving temps the a6s would have more grip just didn't sound like a good idea.

davidfarmer

at any temp this would cause a dangerous oversteer situation, even if you run 255 in the front and 345 in the rear. A6's are just much stickier.

Why would you even want stickier, faster wearing tires in the front?

z06801

hey thats what thought, I'm just trying to keep someone from killing them self on a on ramp

RacePro Engineering

Not the best idea we have heard today -- for several reasons.

For the street, handling imbalance is almost beside the point -

Althought Hoosier just loves selling these tires, they clearly embed RIGHT ON THE TIRE that they are not suitable for street use.

Even if they were "legal" for the road, one will wear though a set in no time at all. They are not made with longevity in mind.

And then there are road hazards (pot holes, debris, etc.), that race tires are not designed to handle.

All this aside, how would it be possible to utilize any of the grip on a road? One must sustain slip angles to make these work.

There are probably a bunch more points one could site why the notion is idiotic, but these are the ones that rush to mind.

Ed

Z06cool

travisnd

I've seen in the FI forums where guys take R6s and have tread cut in them because they want some traction w/o giving up handling like you would with a drag radial. For the record I never said it was a good idea

RacePro Engineering

Now, I just wonder how that is working -

I rest my case.

travisnd

Well... when you have a 800 rwhp car traction is hard to come by. If you run a drag-radial you get some traction, but handling goes out the window due to sidewall compliance. A few of them started getting Hoosiers with tread cut into them.

Jason

As one small step to prevent the coming Idiocracy, I fully support this idea.

Solofast

Can you imagine what a set of Hoosiers would do after a couple of weeks on the street!!! Let's see, a couple of heat cycles a day for two weeks. Can you say harder than a brickbat!!! I knew you could!!!!

They would be so hard you would be better off with a set of 10 year old Goodyear F1's!!!

I drove my car to work (10 mile round trip) for a couple of weeks one summer on sunny days with some old V710's on it. They were pretty much shot from autocrossing and then a couple of test days with Formula V on them. They were nasty, I could light them up any time I wanted to in the first three gears...

Hoosiers harden up more than 710's and have a much thinner carcas. Definately a dumb thing to do.

RacePro Engineering

Well, now, David did not seem to think the idea of using these tires on the street was too outlandish (or at least did not say so.) And Travis seems to be supporting it, and also Jason. (All wise gentlemen as far as I am concerned.) So, there is obviously something (other than the inability to control wheelspin) that I am missing here?

To clarify:
[1] We are discussing street usage?
[2] We are discussing Hoosier DOT radials in R or A compounds?
[3] Individuals are grooving these to IMPROVE traction?
[4] These people are doing this on an on-going basis?

Please elaborate. I am more than willing to learn.
Ed

Jason

I support it in hopes that these people don't breed and contaminate the gene pool.

Solofast

The thing these guys are missing is that Hoosiers (at least A6's anyway), arent that good of a tire for putting down power. I've done drag starts on concrete and could light them up easily. Yea, they have a soft compound, but the sidewalls are so stifff they don't hook up worth a darn off the line.

Jason

Every compromise sucks.

RacePro Engineering

Whew! Now this is finally making sense.

And here you fellows had me worried that a large block of my learning and knowledge had somehow become faulty, and was missing a couple of chunks. I did not notice your toungs tucked firmly into your cheeks.

Thanks for finally pulling me out of my deep introspection - and with a nice laugh!

This is an excellent observation, in my opinion.

Z06cool

Jason's humor is sarcastic to say the least....but he does make good coffee... Just do not leave him alone with your car....

Blue 92

And if you go to watch him race don't tell him where you parked his parts car.......

drivinhard

I know I can "go" on lap one of TT if it'll hold for a full bore 1st gear WOT snap, with the small clutch in my car, 1st gear's accel rate is violent. If at the end of the in lap it's still scratching around in the rear in 1st (or 2nd with a bit of steering input), I run lap 1 as a tire heater lap