Hello,
I have a 09 FX4, I installed a 2" leveling kit. I still have a set of brand new goodyear Duratrac tires from my 08 F350, they are size 270 75 18, can I use them on my 150 without messing up the computer or speedo? Or should I trade them in and get stock sized tires?

 

Are they 275/70-18s? They are 33.2" tall- they're one inch taller than the factory GS-A's 275/65-18 that came on my truck. Your speedo might be off just a tick, but there are alot of guys that upgraded to one size bigger than stock. You should be fine with them. I have a 2" LK and 295/70-18 (34.4/11.4-18) Nitto TG on stock rims and I think its off like 4 or 5 mph at 60. At 40 mph I registered 42-43 on the radar tow-behind thingys that the local police leave on the side of the road from time to time. HTH- Tim

 

Yes, thanks. Typo. 275 70 18.
Ok, cool..saves me 1100$ for new tires. I have an extra set of rims, truck came with 20" rims. I need to get tire pressure sensors for the new rims.
Thaks for the info.