i have the 285's on my truck now but i want to put bigger tires on it but i dont quiet understand how the numbers work. so whats the next bigger tire after the 285 and so on and im wanting to lift my truck so about how much taller would 35'' tires make it stand? thanks

 

The tires you have now are pretty close to 33" (assuming you are running 285 75r16 or 285 70r17)

Here is a converter that will help you get to a size you can understand:
http://www.redrock4x4.com/tech/tire_calc.php

So to go to a 35" tire you will gain about an inch in height overall (difference in tire size / 2 = change in overall truck height, not accounting for any changes made to the suspension)

 

Yea, if you are ever stuck on not knowing what the exact size is of a metric tire, Google "tire size conversion" you'll get about a hundred sites with a quickie calculator.

I put a 3" body lift on my 2nd gen when I had it, fit 35s with a little rubbing, nothing major, just a little plastic trimming in the front to correct it, no metal cutting.

 

I had a 3 inch suspension with 35's on 15x8 wheels. I ended up lifting it 5 inches to get them to clear without body contact when the suspension flexed off-roading. They fit good on the street though. Guess it all depends on how you use the truck.

 

alright i get it so far but can ya show me a example of how to get the size difference between tires like my 285/75r/16 and like a 35/13.50r/20 and can ya also tell me what eacj of the number mean while your at it lol

 

yeah i have a 3 inch lift just putt on 35's last week and good on road but rub on the trail. i order 3 inch bodylift to get me the rest of the clearance i need.

 

Check out this tire size calculator. Should help you get an idea about your options on tire sizes.

http://www.redrock4x4.com/tech/tire_calc.php?