Shakin,
My stock tires are P275/55/20 which equates to a 31.9x10.8 tire. I just installed the AS 2" leveling spacers so I feel I can go with 33x12.50 tires without any problems at all. I think the closest metric size would be 305/55/20 which would be a 33.2x12 tire. The 325/60/20 tires are 35.4x12.8 and 'might' give you some rubbing if you truly take your truck off-road and through some ditches at angles. Here's a good web site to convert metric sizes: http://www.4lo.com/calc/gearmetric.htm

 

Now you say you went with a 3" blocks in the rear. Does that replace a factory block? Whats the total amount of rear lift?

 

3" total, it replaces the stock 1.5" blocks.

I had to do some minor trimming on the plastic around the wheelwells and the inner rubber fender. It does rub the control arm at full lock too.

 

Do you know what the width of your stock 20"s are?

 

8.5"

 

yeah, 8.5 im sure helps a lot with mounting a 35" tire. I think I am going to go 1.5" level kit with a 33" tire. Its still my daily driver and I dont wanna kill my mileage completely.