I am picking up an 01 Supercrew 5.4 next week and have a few questions about tire size. The owner just put on a new set of good year triple treads and the size is 275/70R16.

He said the stock tire was 245/70R 16, is this correct?

Will this affect my ABS?

Can anyone link me to a good tire size converter. I want to know the speedometer difference, RPM changes, etc.

Am I going to notice a significant mileage loss?

Are the wider tires better or worse in deep wet snow, loose gravel or washboard?

Also I wasn't sure where to look for the diff ratio-can anyone fill me in?

Thanks

 

it wont mess up your ABS so dont worry. 4wheelparts.com has a tire calculator. you gas mileage wont go down much, if you even notice it.

you can look in your door jamb and look at the sticker where is says axle and post up what code it says.