what size are q78-15 tires?

[OffRoad]

aren't they like 36x9 or something?

 

[6.2Blazer]

The spec page on Interco's site lists them as 35.5x9.5

 

[joez]

Mounted on 5.5" wide rims mine measured 36.25" tall by ~10.75 wide. Tread width is closer to 9.5". They have a lot of tread depth too, at 27/32".

 

[icer97]

They are a meaty tire, many guys around here run them. Mostly 16's though. If your after a skinny digging tire around 36 inches, this is the one.