Tire help

[Honda TRX250ex]

So i got a 05 f150 5.4 stepside if that matters, i need to get some new tires for it. I want 33 but idk what size they are in i guess metric. So if anyone could tell me what size tires i need that would be great. And they are 18 inch rims also.
Thanks

[bean2080]

i beleave it is 255 for the 18" wheel, i could be wrong though

[parkers30]

285/65/18 will get you a 'metric 33' really it a bit short, but they are roughly 33/11.5/18

I just put BFG 285/70/17 on my truck to fit the stuck wheels.

[underpowered]

either a 285/65 or a 305/60 is what you want. bother are about 33" tall, a little short at about 32.5 though. the 285 is just over 11" wide where the 305 is right at 12" wide.