Help with what tire size to go with

little luke · Nov 1, 2012

I'm currently running around on a set of drag slicks I made out of a set of bfg's. they have 65000 miles on them. They are 305/65/18. I'm horrible at choosing tires. I'm wanting to try something different like atz's. what size will be the closest to what I have been running. A 305/60/18?? Or a 305/70/18? I know this is probably beat to death but I've searched an cant really get a straight answer. I'm buying tires online due to some bad deals I've had with the local shops. So what web sites would y'all recommend to purchase from? Any other recommendations on a decent road/ or all terrain tire would be appreciated also. Thanks.

Oh truck is stock height and stock 18 inch wheels on a 2006 4x4 f250. Tires can't rub.

Fordkid · Nov 1, 2012

60 and 70 refer to width of tire

little luke · Nov 1, 2012

Im not to clear on how tires are measured. The site says they are both 12.5". One is a 33" and one is a 35" from what I'm understanding.

Fordkid · Nov 1, 2012

For a 305?? That should be more around 33 are you on bfgs site?

little luke · Nov 1, 2012

Nah, for the atz's. just going by this chart. http://www.mickeythompsontires.com/truck.php?item=BajaATZRadial
I think the bfg's where a 34" tall and 12.5" wide if I'm thinking right

java · Nov 1, 2012

Fordkid said:
60 and 70 refer to width of tire

The 60 and 70 are the height, 305 is the width. IIRC

TripleE44 · Nov 1, 2012

Fordkid said:
60 and 70 refer to width of tire

Fordkid said:
For a 305?? That should be more around 33 are you on bfgs site?

Neither of these are true. 305 is the width of the tire in MM. The 60 or 70 is the aspect ratio of the sidewall. The sidewall is 60% of 305mm tall on the 305/60.