Yeh, what do all those stupid tire injuneers know abour tires and wheels anyway? And of course the guy running the 315's on a 9" wide wheel has X-ray vision, and can assure himself that the increased flexing of the sidewall and tread is not leading to premature failure of the cord......

This is almost funny.

 

Did you completely miss the point that the Nitto 315/35r17 tires run smaller than other brand similar size tires? I've seen BFG DR, Nitto DR, and and Dunlop 315/35r17 side by side by side. The Nitto was significantly smaller. We then compared the Nitto 315/35r17 to a Goodyear Eagle F1 285/40r17... guess which was larger?

The few people that I know that run these tires on the 17x9 wheels have been doing so for YEARS. Two of them are putting over 500HP to the ground. Street driving, 1/4 and 1/8 mile track racing, and I'm sure someone in the group has done some organized road racing. The only problem they've ever experienced was accelerated wear in the center of the tire, which all Nitto's do over 28psi, including my 275/40r17 on a 17x9 wheel.

Do you have any real world experience in this or are you just talking out your a$$? EDIT: I just checked your site. Seems you ran or once ran the BFG DR's. I see why you don't understand The BFG is an inch wider than the Nitto...

 

I agree that the 315 Nitto is fine on a 9.5. I've argued this over and over Marc. No one will listen. The Nittos do run smaller... I guess that is the main reason. I ran them on 9.5's for about 2 years before switching to 11's.

I have a friend with a 580hp, 10 second Supra that has been running them on 17x9.5's for about 4 years now... no problems at all.

 

You can get as loudmouth and obnoxious as you want... you are still wrong. Easy way to settle it... ask Nitto what rim width the recommend for the 315/35-17 555R. If you go to their website, you will find that they actually don't state a minimum rim width for that particular tire.... they do measure it on a 10.5" rim. The section width as quoted as 12.13" That is approx 1/4" narrower than an equivalent BFG Comp T/A DR, and about 3/4" wider than a Goodyear Eagle F1 GS-D3 in 285/40-17. Of course those dimensions are just dreamed up by tire injuneers, so we know they are all wrong.

BFG recommends a rim width of 11-12" for the 315/35. Goodyear recommends a rim width of 9.5-11.5" for that 285/40.

All we can do is hope Darwin was right.......

'scuse me..... just talkin' out my a$$

 

Hey Injuneer,
How do you feel about a 275/40 or 285/40 on a 8.5 inch 17" rim?
Honestly.
Thanks,
Don.

 

Dude, just by looking at that pic I can say that tire is not meant for the rim. Look how much it's bulging around the lip of the rim, it doesn't look good at all to me. And that can't be to good for the way the tire was designed to fit on a rim, look at the pic, it's not fitting correctly. I have 315's on 17x11 wheels, thats the way you should run 315's. The tire fits the wheel perfectly, none of this bulging over the rim stuff, .

But if you have done it and want to run this setup, more power to you. But if I had a 9.5" rim, I'd run the smaller tires that are designed for it, if you want 315's, by 11" wheels.

Whats this talk about a nitto 315 being smaller then other 315's, the spec says 315 thats what it has to be or nitto is advertising the wrong tire size. Your saying if i buy a nitto 315's for my 11" wheels they will be to small because some how nitto doesn't know what the metric system is, makes no sense to me.

Brian

 

I hate to get into the middle of this... but just because the "spec" is a certain number, does not mean that the actual size does not vary. Ask anyone who runs a 315 Nitto and they will tell you that it runs a little smaller. I've been a mechanical engineer for 7 years and no matter what the product is.. there is always some sort of variance between manufacturers.

If it's false advertisement... a different measurement point... whatever... that is irrelevant. The FACT is, the Nitto 315 is a little smaller than others.

 

I agree 100%. I run the nittos and a friend of mine runs BFG's. The BFG's are a lot wider.

 

How about you actually put YOUR hands on some tires and compare before you reply again. You can quote all sorts of numbers from anyone, but there is a big difference in reality. That's why I don't like engineers (I'm a Ford technician by trade), they trust numbers/math over what actually exists. No offense to Will84, as he seems to get that

And to the recommended rim width part: Go see what BFG recommends for their BFG Drag Radial class required tires (NMRA and NMCA), and then go see what size rim most of those guys use. Then when you find out that a lot of guys use 8" wide wheels for the 325/50r15 tire, while BFG recommends at least 9", then get back to me

 

Just b/c a bunch of people use it doesnt make it right. I personally think it is fine to run a nitto 315 on a 9.5 rim, but i know its not right.

These engineers though did a lot of studies and recomend that width for a reason. The failure might have been 1 in 500,000 but im sure there is some reason for their recomendation. Thay also take into acount wear and tear on the tires related to the rim width.

 

You can do it any way you want... its your car. I can give you my opinion... take it or leave it. Let the people reading the posts make up their minds. Doesn't effect me personally, one way or the other.

There's a right way to do things, and a wrong way to do things... and rationalizing that "everyone does it" doesn't change wrong to right.

 

So THAT'S how you got to 13 thou plus posts. Patience and perseverance.