17" rims and fuel economy

[MadMax]

Originally Posted by thebarber

it is suggested you dont go past 3% tire size difference....just because it screws up your speedometer and odometer too much otherwise...

I have never heard that one before, can you cite your source? Plus, if anything, that is probably a rule for stock rims, on which you can put slightly larger tires. But mine are aftermarket.

Plus, I own a Jeep, so I am very familiar with oversized wheels and tires! It is very common in the Keep community for people to put huge tires on their rigs. Besides suspension modifications, the only real requirement for larger sizes is regearing (for going from 29" tires to 35" or larger); but that is not an issue here.

The stock Yaris with an AT can easily handle 17" wheels, and you can even lower it by changing out the springs to some degree without having rubbing issues. People all over this forum have done this, and there are numerous threads about it

Cheers! M2

[thebarber]

Originally Posted by MadMax

I have never heard that one before, can you cite your source? Plus, if anything, that is probably a rule for stock rims, on which you can put slightly larger tires. But mine are aftermarket.

Plus, I own a Jeep, so I am very familiar with oversized wheels and tires! It is very common in the Keep community for people to put huge tires on their rigs. Besides suspension modifications, the only real requirement for larger sizes is regearing (for going from 29" tires to 35" or larger); but that is not an issue here.

The stock Yaris with an AT can easily handle 17" wheels, and you can even lower it by changing out the springs to some degree without having rubbing issues. People all over this forum have done this, and there are numerous threads about it

Cheers! M2

jeep is a different story though...i have a buddy on 35's....he changed the gearing in his speedo though

as for a source of that 3% rule...1010tires.com, the place you linked to goes red if you put in a size thats 3% larger than your stock tires on the tire size calculator...see:



the tires you bought are sized for a corolla.....