i just purchased a f150 2008 lariat with 20 inch wheels. what is the largest tire i can fit without a leveling kit on the stock wheels. would also like to keep them inside fender flare. i want the terra grapplers. thanks any help would be great. been searching around but cant find much on this exact truck.

 

I'd suggest a 285mm or 295mm wide tire because the OEM 20's have so much backspacing. This causes some 305mm (12.50 inch) tires to touch the control armm at the upper ball joint. A 285/55-20 (33x11.50) would be a good choice. I know a 285/65-20 (35x11.50) will fit with a leveling kit, but I'm not positive that there would be no rubbing without one.

 

so A 285/55-20 will not rub and will stay inside fender flare. if so thats what i want

 

Yes.

 

right now im running a 275 55 20? isnt a 285 55 20 going to be the same size only a little wider?

 

It will be 10mm wider and slightly taller.

 

is there a way to just get taller and not wider? i decided im going to level it with a 2inch autospring kit

 

id like to know this too, right now Im running a 325 (35" tire) and it smacks the upper control arm. its just too wide. Im afraid if I go down to a 285 as that might look too small with my leveling kit

 

will a 275 60 20 stay inside flares and not rub? or will i need a leveling kit?

Im so confused at this tire size thing

 

How about a 275x65x20 (34x11)

 

Will that fit with a 2 inch level with no worry of rubbing?

 

Yes. Also, to help you with sizing, in the metric system the first number is the width of the tire in millimeters.