315's on a 9" rim

[tabahr]

This idiot on another board is convinced it is ok for him to put 315's on his 9 inch SS wheels!!

I've tried to convince him it is a bad idea, but he is not listening to me. Oh well..... Some people just don't get it.

Check out the thread..
http://web.camaross.com/forums/showt...56#post1767956

[fastTa]

315's on a 9 inch rim will seriously distort the angle of the sidewall resulting in very diminshed handling characteristics. Not to mention the center of the tread would wear prematurely due to the tire being "squeezed".

Tell him to just call any profesional tire store.

[Performin Norman]

You can lead a horse to water but...............

[Injuneer]

You could always reference my favorite "persuader" on this issue.....

<----- 315/35 on a 17x11 rim . . . . . 275/40 on a 17x9.5" rim --------->

[Jeff_in_Atl]

A LONG time ago I out a G60-14 on a 6" rim. I had to run it at about 20 PSI to keep it from looking like a motorcycle tire and wearing in the middle. The weird thing is it didn't wear on the outside and the very middle. The tire marks it left looked like the centerline on a no passing road. Very weird. Not a good idea at all. Post a link to this thread and the last thread about this issue on that forum.

[wolfdogs]

idiot. plain and simple. premature wear of the cord body and belt package......and funny thing is.. his contact patch will be no bigger than a 275/40r17 on the same rim...... in order to get the proper enlarged contact patch of a 315..you need the 11" rim.

[tabahr]

Originally posted by Jeff 95 Z28
A LONG time ago I out a G60-14 on a 6" rim. I had to run it at about 20 PSI to keep it from looking like a motorcycle tire and wearing in the middle. The weird thing is it didn't wear on the outside and the very middle. The tire marks it left looked like the centerline on a no passing road. Very weird. Not a good idea at all. Post a link to this thread and the last thread about this issue on that forum.

I did post a link to another thread here that included Injuneer's photo showing the difference. He STILL doesn't get it..

I've given up hope... I'm just venting here now. I'd be afraid of a blowout at high speed. Darwinism at it's finest.

[Performin Norman]

Originally posted by tabahr
I did post a link to another thread here that included Injuneer's photo showing the difference. He STILL doesn't get it..

I've given up hope... I'm just venting here now. I'd be afraid of a blowout at high speed. Darwinism at it's finest.

I didn't read the other thread but mark my words. It is just a money thing and this person just doesn't have it or want to spend the money to do it right.

[Black97]

I run across people like that at work all the time.

They do things the wrong way, sometimes endangering themselves and others. But when I tell them it's wrong, they say that they've done it like that for twenty years!

I get great please by saying that they've done it wrong for twenty years. But that usually goes right over their head.

Some people have to learn it the hard way. The problem is in cases like that, innocent people get hurt while they get away with a scratch and a bump on their head.

[Rob]

Originally posted by wolfman
idiot. plain and simple. premature wear of the cord body and belt package......and funny thing is.. his contact patch will be no bigger than a 275/40r17 on the same rim...... in order to get the proper enlarged contact patch of a 315..you need the 11" rim.

The contact patch WILL be bigger. I used to run 315 Drag Radials on WS6 wheels and you could, without a doubt see the difference. And it was proven with a burnout, side by side. The 315 was definitely wider.

Is it optimal, no. But it does lay down a wider patch.

Running 315 street tires on a 9" might be too small. 9.5" would be fine as I know of two Comp TA's that have been on the road course with that setup and have been fine. Tires had many miles and no adverse wear patterns or other problems.

[fastTa]

We were talking about a 9" wide wheel and not a WS6 wheel which is 9.5" wide.

I love what Black 97 said because it is so true:

I run across people like that at work all the time.

They do things the wrong way, sometimes endangering themselves and others. But when I tell them it's wrong, they say that they've done it like that for twenty years!

I get great pleasure by saying that they've done it wrong for twenty years. But that usually goes right over their head.

[Rob]

Originally posted by fastTA
We were talking about a 9" wide wheel and not a WS6 wheel which is 9.5" wide.

I love what Black 97 said because it is so true:

Just so you know, WS6 wheels are 9" wide. 17x9. Been that way from 96-02.

[Injuneer]

Ditto.... WS6 and SS are 17x9

I've seen the 315's on a 9.5" wide rim, and they still "look" scrunched..... hardly a technical measure..... purely aesthetic.

[fastTa]

Yeah you guys are right. I was measuring the overall rim width (outside of bead to outside of bead) which is slightly more than 9.5". I was assuming that was the specified rim width. OOps