sorry if this topic is worn out,but i have to ask.i am waiting for my new fx4 to arrive from factory,and i am hoping to have oversized tires before it comes.can anyone tell me what is the biggest size tire i can fit on a 2008 f150 fx4 supercrew.not planing any other mods.thank you for your time.

 

I would suggest a leveling kit (<$100 for the good AS kit), but even without that you can fit a 33" tire. If you have the stock 18" wheels I would go with 285/65/18 or 275/70/18. Stock size is 275/65/18.

 

ok, i ave found a set of tires that i like,i just need someone to tell me if they will fit.my truck is an 08 fx4 f150 supercrew.stock tire is 275/65/18.there are no plans for a lift kit or leveling kit.but i would like the biggest tire i can fit on stock truck/and rims.tire i have found is a 325/65/18.please help.

 

Not going to work. Thats almost a 35 x 13 inch tire. Way too big for a stock height truck. With a 2.5" level it would be tight and probably rub at full lock. The biggest you want on a stock truck will be a 285/65/18 or 275/70/18.

 

ok so this tire size is all wrong.but the two sizes you mentioned are not much different than stock are they.i am not to good with tire sizes.how about a 305,maybe.thank you for your help.

 

Others may know better, but I don't think you can fit a 305-65-18 without a leveling kit either. Many people run that size BFG a/t but all have at least a 2" leveling kit.

I can say that on my truck the 275-70-18 does look bigger than stock. Its a much more aggressive tread and about 1.1" taller.

For your reference:

Tire Size - Width - Diameter
275-65-18 - 10.83 - 32.07
275-70-18 - 10.83 - 33.16
285-65-18 - 11.22 - 32.59
305-65-18 - 12.01 - 33.61
325-65-18 - 12.80 - 34.63

I would deffinately recommend a leveling kit. You can get a 2" AS kit for $90 shipped, and install is pretty easy. It will make big difference in the look, and also in what you can fit.

 

Here's a pic of mine with 275-70-18 Toyo Open County AT's and a 2" AS leveling kit. There are more in my gallery.

 

thanks,i will have to go with the 285/65's.don't really want to spend all that money and be no good.thanks again for your help.

 

Look online at treadepot.com and search by tire for 325/60R18. There are a lot of good prices for that large of a tire. The 325/60 is 13" wide and 33.4" tall. Don't know if it would fit, though. I just ordered 3" leveling kit and changing the rear block to a 3" on my '04 Screw FX4 and I will be putting the 325/60 Toyo Open country on my truck.

 

A 13" wide tire may rub a bit with the 3" kit, but not bad. Deffinately not doable without the leveling kit though.

And which 3" kit did you get? The general concensus is that anything over 2.5" puts pretty severe angles on your front end components.

 

thanks for the input.don't know if i should have but i just orderd 35/12.50/18 for my truck.also took your advice and also got my ford dealer to order the level kitfor my truck.truck should be here in 2 weeks.fun fun fun

 

Good choice! What tires did you end up with? 35x12.5 should looks nice with the leveling kit.

 

thank you for your advice.my ford dealer tells me that with the kit(2.5")level kit,my 35's wont rub.i hope he is right,just spent 2000 on 5 tires.i went with bfg mud terrain, i think they are tm2 or something.probably not a great highway tire but the town i live in is very small.5 minutes to drive from one end to another.i will still have the original tires for when i drive out on vacation.have you heard of these,or even owned a set,if so your input on these tires would be great.thank you,have a good day.

 

The new BFG Mud KM2's are pretty popular around here and some other F150 sites. They look great and are suprisingly quiet for a mud terrain. Good choice, and try to post some pics when you get them on.

 

nice to hear the are a pretty good tire.i will post pics as soon as my truck gets here and is ready to pick up.