want a wider tire for my wheel, what will work?

**Bakerman** · 06-17-2009, 08:18 AM

Got it !!!!

Thanks !!!

**T/A Turbo 1989** · 08-31-2009, 08:20 AM

Originally Posted by Bakerman

I autocross and am considering a larger tire "275/50/16" to replace the stock 245/50/ 16's. Can anyone tell me if these tires will work without rubbing? And, if I need a spacer, how large of a spacer do I need ?

No one that I know of makes a 275/50R16. The other problem you may not understand is that when you go wider from a 245 to a 275 you must bring the sidewall aspect ratio down so that your overall diameter does not increase and you end up with a tire that is wider but also taller!
You would have to bring your sidewall on a 275 down to a 45 or 40 series to maintain the same diameter as stock.
There are some 275/45's made by Hoosier in a drag style tire but not recommended for auto-x.
One of your biggest enemies in autocross competition is sidewall height. You want to stick to a low profile! So stay with stock height or go lower than stock to pick up some additional stiffness.

**Bakerman** · 09-01-2009, 02:24 PM

Thanks !!! I actually bought a used set of Kumho 265/45/16 V710's. I've autocrossed them several times now and they work just fine. They work much better than the driver.

)

**animal323** · 09-12-2009, 04:45 PM

How do you read the width of a tire i thought it would be the middle number for ex: 275/50/16. If i want a fatter tire for the back wouldnt i go to 275/45/16 or am i completly off? 275 is the depth of the tread?

**KING Z28 HAWK** · 09-13-2009, 06:32 PM

274 is how wide the tire is 45 is how tall the tire is and 16 is what size rim it goes on.

**mrr23** · 09-14-2009, 03:15 AM

Originally Posted by animal323

How do you read the width of a tire i thought it would be the middle number for ex: 275/50/16. If i want a fatter tire for the back wouldnt i go to 275/45/16 or am i completly off? 275 is the depth of the tread?

275 = width of tire from sidewall to sidewall
45 = sidewall height of the tire as a percentage of the first number (275)
16= rim size

**animal323** · 09-14-2009, 08:10 AM

thanks i appreciate it

**tommygramtham** · 07-23-2010, 02:32 PM

Corvette c6 19" wheels 1 1/4 wheel adapter wrap in goodyear eagle f1 super tire run flats

**tommygramtham** · 07-23-2010, 02:35 PM

**hall_5950** · 02-22-2011, 10:59 PM

I put the Vette C6 rims on my 98 Formula and all 4 rims are 18X8.5 inch. I am tire shopping and wondered how wide a tire I can get away with without rubbing or having them stick out of the wheel wells? I currently have BFG KDW's in 245/40 on and am looking for something a little wider. What would you guys suggest I could get away with?? If it makes any difference I think I settled on Nitto NT 555 Extreme's as the tire I'm buying.

**02ssmaro** · 03-05-2011, 07:50 PM

I have a 02 Camaro SS so it's 275/40R-17. I want to buy rims for the drag strip and I want 17in by 11in rims. My question is will 315/35R-17 fit on that size rim(safely) and will the rims and tires fit on the rear of the car without rubbing?
Thanks guys

**2001camaroSS** · 03-05-2011, 10:32 PM

Originally Posted by hall_5950

I put the Vette C6 rims on my 98 Formula and all 4 rims are 18X8.5 inch. I am tire shopping and wondered how wide a tire I can get away with without rubbing or having them stick out of the wheel wells? I currently have BFG KDW's in 245/40 on and am looking for something a little wider. What would you guys suggest I could get away with?? If it makes any difference I think I settled on Nitto NT 555 Extreme's as the tire I'm buying.

that is an awfully skinny set of wheels. the widest you can go is a 255 on an 8.5 wide wheel.

Originally Posted by 02ssmaro

I have a 02 Camaro SS so it's 275/40R-17. I want to buy rims for the drag strip and I want 17in by 11in rims. My question is will 315/35R-17 fit on that size rim(safely) and will the rims and tires fit on the rear of the car without rubbing?
Thanks guys

315s will fit that rim size just fine. i will be running 315s on my 18x11s here in a month or so. as for the rubbing it all depends on the offset of the wheel.

**02ssmaro** · 03-06-2011, 03:01 PM

Thanks 2001camaroSS. When you put yours on let us know if it rubs or not.

**2001camaroSS** · 03-06-2011, 03:44 PM

Originally Posted by 02ssmaro

Thanks 2001camaroSS. When you put yours on let us know if it rubs or not.

i already know mine is going to rub. I'm going to have to make some modifications in order to get them to fit properly but it can be done without modifications for 17s. just gotta have the correct offset and can't be lowered too much.

**02ssmaro** · 03-06-2011, 04:48 PM

Originally Posted by 2001camaroSS

i already know mine is going to rub. I'm going to have to make some modifications in order to get them to fit properly but it can be done without modifications for 17s. just gotta have the correct offset and can't be lowered too much.

Right, thanks

**AKA Speedy** · 03-06-2011, 05:18 PM

I've been looking at swapping my 17x11 stockers with 315's for a 19x10 to get rid of my rubbing issues that occur only when the car goes in a bind (i.e turning to go up a steep ramp into a parking structure). Now before others try offering alternative fixes to decrease bind, I already have larger FT/RR sway bars, ADJ Panhard bar, LCA's, Sub-frame Connectors, and Koni sing/adj shocks.

I was hoping to fit a 305 on the 19X10's, so I don't loose too much width.

**2001camaroSS** · 03-06-2011, 06:21 PM

Originally Posted by BrianH.WS6

I've been looking at swapping my 17x11 stockers with 315's for a 19x10 to get rid of my rubbing issues that occur only when the car goes in a bind (i.e turning to go up a steep ramp into a parking structure). Now before others try offering alternative fixes to decrease bind, I already have larger FT/RR sway bars, ADJ Panhard bar, LCA's, Sub-frame Connectors, and Koni sing/adj shocks.

I was hoping to fit a 305 on the 19X10's, so I don't loose too much width.

i would think you are going to increase the rubbing by going with an even larger wheel and only slightly smaller tire.

**AKA Speedy** · 03-06-2011, 06:38 PM

Originally Posted by 2001camaroSS

i would think you are going to increase the rubbing by going with an even larger wheel and only slightly smaller tire.

you know I thought that too, but because I am decreasing the sidewall to a 30 from my 35, the actual tire height is only increasing by .5-.6"

the rim would be decreased by a whole inch in width. thanks for the input though

however does anyone think a 305 will fit on a 10" wide rim without any major bulging?

**2001camaroSS** · 03-06-2011, 07:15 PM

i just looked at the height difference between a tire with the size of 315/35/17 and a 305/30/19 and the 19 was .7 more than the 17. as far as width the largest tire size recommended for a 10 is 295 but I would imagine you can get away with a 305.

**AKA Speedy** · 03-07-2011, 09:21 AM

Originally Posted by 2001camaroSS

i just looked at the height difference between a tire with the size of 315/35/17 and a 305/30/19 and the 19 was .7 more than the 17. as far as width the largest tire size recommended for a 10 is 295 but I would imagine you can get away with a 305.

okay... I think it depends on the tire manufacturer then.

The other thing you have to account for is that only half of that is going to play a factor (law of symmetry) in actual clearance issues, so .35 (being half of .7 right?) is all I have to worry about. I think that kind of difference is minimal. As of now I am running a stock rim that has been widened by 2 in. (to the inside of the wheel well).