GSMoving

Can I run 245 40 18s on the front and 255 40 18s on the rear without any issues? The key being 245 and 255 front to back. The car is a 06 GS300 AWD.

mitsuguy

iTrader: (2)

only if you don't mind destroying your driveline in the process... the car was designed to have all 4 tires turn at the same speed all the time - if you constantly have different diameter tires turning different speeds, you will damage the center differential and/or other related pieces that are usually pretty pricey...

it isn't even recommended to replace two tires at a time unless you are replacing with identical model with less than 2-4/32" tread depth difference from the existing...

zig@tr

mitsuguy is absolutely right, if this was an RWD there would be now problem but on the AWD all 4 tires have to be the same height. I know they're pretty close but that 0.3" difference multiplied over thousands of miles could damage the drivetrain. In my opinion the esthetics are not worth the damage to the vehicle.

GSMoving

Thanks, ordred two new to match.