I have been searching for a good deal on tires for my bone stock 04 f 150 stx- all the deals I find are for 265-70-17 , not the stock 255-70-17. Will I have to calibrate the speedo ? will this be too much drag for my 4.6 with 355's? THANKS

 

This link will help you on the speedo question.

http://www.net-comber.com/tirecalc.html

I know the pain on research with Tires/Wheels. I am heading out today to get some good 33's and 17 or 18 inch rims to go on my stocker 4X2 F150 (07)

 

No that is not gonna be enough to matter, it puts you at a 32x10.50 tire....the older body style 4x4's came with that size stock

 

thanks for the link. thats a cool page to have .

 

I agree. You will be fine.