Tire size

[2sslowrock]

Hi all! Looking for opinions. Im upgrading with new wheels and tires but I'm torn on the tire size. For reference, 20x10 and 20x11 wheels. I have a 2015 auto. I want to fill the horrendous fender gap.

I'm thinking of 315/35 in the back but not sure about the front. Will a 275/40 in the front sit flush with the fender or will it still not be filled? I was also thinking of a 285/40 but it's slightly taller so not sure how that would look.

[Rusty Shackleford]

305/35/20 out back & 285/35/20 up front is what I'd do on those size wheels.

[1JEWLDSSRS]

Originally Posted by 2sslowrock

Hi all! Looking for opinions. Im upgrading with new wheels and tires but I'm torn on the tire size. For reference, 20x10 and 20x11 wheels. I have a 2015 auto. I want to fill the horrendous fender gap.

I'm thinking of 315/35 in the back but not sure about the front. Will a 275/40 in the front sit flush with the fender or will it still not be filled? I was also thinking of a 285/40 but it's slightly taller so not sure how that would look.

Well to start, you won't fill the fender gap unless you lower the car at least 1 inch, or 1.25 like I have. Changing the tire size alone won't do the trick because the tires you are looking at are the same diameter as the stock ones, just wider than stock. On a 20x10 wheel most guys are running 275/40's, or 285/35 like I was on my 10's out front, in the rear I ran 315/35's on my 20x11's, also I did fit a pair of 335/30's on the rear on the 11's, and they fit. I went back to the 315's because the look of the sidewall narrowness with the 335 just didn't look right to me with the fronts. Hope this helps you out!

[Indian_Mack]

Careful with the width on the front tires. I put 255s in the front and it was rubbing on my coilovers.

[DirtyDirt]

Originally Posted by Rusty Shackleford

305/35/20 out back & 285/35/20 up front is what I'd do on those size wheels.

That is exactly what i have on mine

[hesster]

Originally Posted by 1JEWLDSSRS

Well to start, you won't fill the fender gap unless you lower the car at least 1 inch, or 1.25 like I have. Changing the tire size alone won't do the trick because the tires you are looking at are the same diameter as the stock ones, just wider than stock. On a 20x10 wheel most guys are running 275/40's, or 285/35 like I was on my 10's out front, in the rear I ran 315/35's on my 20x11's, also I did fit a pair of 335/30's on the rear on the 11's, and they fit. I went back to the 315's because the look of the sidewall narrowness with the 335 just didn't look right to me with the fronts. Hope this helps you out!

Spot on input. What I find is lacking in the forum is OFFFSETs! Sure, 10/11 wheel widths are all great, but if you do not have the correct offest you can be in a world of trouble with Caliper interference, or Tire interference. Add in lowering characteristics (Springs/CO's) and the fitment get's even more challenging. There is a great wheel & tire size guideline on the forum, but it does NOT address recommended offsets. And this can also depend on the Wheel design, and alignment specifications.

So do your research, and understand what has worked for C5 members based on actual selections and usages.

I spent a good deal of time analyzing the correct offset to ensure the widest 315 tire and Custom Wheel would not cause me issues on a stock suspension. Stance is everything for visual impact. Generally a "2 finger" tire to W/Well gap looks good, and the tire should not stick out from the fender lip. You can always lower your ride, via Lowering Springs or C/O's, but resorting to spacers means you did not get Wheel Dimensions and Tire selections correct.

I was grateful I had no interference on my selection, but realize I may need to lower the car after final assembly to get proper fender gap. Better that than spacers, or eating non returnable high $$ wheels with max 315's tires.

[1JEWLDSSRS]

Originally Posted by hesster

Spot on input. What I find is lacking in the forum is OFFFSETs! Sure, 10/11 wheel widths are all great, but if you do not have the correct offest you can be in a world of trouble with Caliper interference, or Tire interference. Add in lowering characteristics (Springs/CO's) and the fitment get's even more challenging. There is a great wheel & tire size guideline on the forum, but it does NOT address recommended offsets. And this can also depend on the Wheel design, and alignment specifications.

So do your research, and understand what has worked for C5 members based on actual selections and usages.

I spent a good deal of time analyzing the correct offset to ensure the widest 315 tire and Custom Wheel would not cause me issues on a stock suspension. Stance is everything for visual impact. Generally a "2 finger" tire to W/Well gap looks good, and the tire should not stick out from the fender lip. You can always lower your ride, via Lowering Springs or C/O's, but resorting to spacers means you did not get Wheel Dimensions and Tire selections correct.

I was grateful I had no interference on my selection, but realize I may need to lower the car after final assembly to get proper fender gap. Better that than spacers, or eating non returnable high $$ wheels with max 315's tires.

Thank you sir! I try to do my best to post good relevant info. I myself have done a ton of research on wheels and tires over the years, and have had 5 different sets of wheels and tires on my Camaro with NO issues thus far, except fot one driver side side fender rub because the tire was too tall,