Widest tire on stock rim?

[Arya Ebrahimi]

In my experience you can run a wider tire on a narrower rim as the tires get larger. For example, you could run a 44"x14.5"x15" on a 15x8 and I don't think you'd have any problems since there's PLENTY of sidewall to take up the difference. Obviously this is an exaggerated case, but I think it generally applies. For example I wouldn't think twice about running a 37x13.50 on a 8" rim.

Ary

 

[corbs]

I've run 33/12.5/15s on 15x7s with no problems and I've run 35/12.5/15s on 15x8s with no problems either. But I wouldn't go beyond that. . . .

 

[Silicon 70]

Does anyone here know of a mathematical equation for gas mileage---->meaning the larger tires you put on how much gas will you lose per gallon. Does anyone know of a formula like this?

 

[corbs]

Does anyone here know of a mathematical equation for gas mileage---->meaning the larger tires you put on how much gas will you lose per gallon. Does anyone know of a formula like this?

You won't lose any gas per gallon, but you'll lose miles per gallon. . . ;p sorry j/k. It really depends on how you drive.

 

[Gold Finger]

Does anyone here know of a mathematical equation for gas mileage---->meaning the larger tires you put on how much gas will you lose per gallon. Does anyone know of a formula like this?

There are occasions when you may get more to the gallon like on the flat just cruising taking it steady at maximum torque and occasions when you will lose out, climbing hills, accelerating driving fast labouring the engine etc. It is all swings and roundabouts just think of it like driving with an overdrive. It also depends on how much bigger %wise compared stock. Gearing is often a compromise in any case.

 

[Silicon 70]

You know what I mean