Hey guys,
im almost certain but want to be 100% sure before making a move, about getting larger size tires for my car. Will 305's and 265's fit on the F Type R coupe, just like the SVR model. Or does the SVR have different fender Wells giving additional room & clearance for the fatter tires. I want to make sure there will be zero rubbing issues. My rims are the 20 inch rims.
Thank you for your answer.

 

No problems with those tires on OEM wheels and no spacers. Those tires will push the sidewalls out 5mm. There is at least 17mm of clearance (but less than 20mm).

 

I put 305's on and its fine.

 

Okay, so bumping up the front and rear tire sizes will be fine. Good to read your replies so I don't make a costly mistake. One last question, based on Unhinged info, one could go higher than a 305 tire size. What would be the next size above 305's. The width of 5 mm is the thickness of a number 2 wood lead pencil. Is each size going up, a 5 mm jump?
Thank you.

 

For every 10mm the tire increases in width, it will spill over each side by 5mm more. You should go no more than 315 wide on the rear for proper fit on an OEM 20" wheel. You should try to keep the tire radius (or sidewall height) the same front and rear, especially if you have AWD. To figure that out you can find the dimensions for each tire at tirerack.com


Simple example:
295/30-20 tires: sidewall height = .3 x 295 = 88.5mm
255/35-20: .35 x 255 = 89.25mm (within 1%).

 

Can increasing the rear without increasing the front tire size cause any problems? Why just increase the rear tire width? Thanks.

 

Your up to swing your bat

 

On a rwd, if going to 305s, it is optional whether you go to 265s in front. However, on AWDs, I'd recommend it .

 

I appreciate your helping educate me on the best tire size selection for my 2015 R. Since I'm changing all tires, why wouldn't I go with larger tires on all four corners? Do I lose something by increasing the front tire size? I assume the reason to increase the rear tire in a RWD car is to increase the contact patch therefore allowing the car to put the power down more effectively. Thanks in advance for taking the time to respond.

 

Like I said, going to the larger 265s in front would be optional for you (RWD). There are pros and cons. For example, a bit more traction in the turns, but also a bit less responsive to steering input and perhaps an increase in turning radius. The car (at least the lighter V6s) have a tendency to over-steer, so I don't think you need to focus on more traction up front. Nobody can see how wide those front tires are unless the car is on a lift, so there's no aesthetic benefit to wider tires.

 

Will the wider tires better protect the wheels from damage?I realize the wider tires stick out further, but does that translate into better protection for the wheel?

 

On the rear tires, at least, yes. I haven't seen the 265s in person yet, so I can't comment on those.