Can you run 33s on a jeep jk with no lift on stock wheels or do i need to get wheels with a different amount of backspacing I know a guy that's running 33s with no lift but his wheels have 3.75 backspacing and the stock wheels are 4.7 or something

 

I've been running 285's (32.8") for years, no problems, no rubbing. MUST run 1.5" spacers, checkout Spidertrax Off Road.

 

 

Ran them with no problems, as well.

 

The need for spacers depends on width for 33's.

 

This is correct. There are a number of threads on here that discuss this topic. I would suggest searching for tire specifics.

 

33x12.50x16 on PC wheels 4.5" BS. No lift no problem other then rub a bit on plastic airdam at full lock.

 

Running a "true" 33" tire (255/85 KM2) on the stock 16" steel wheels, I have no problems lock to lock with rubbing.

 

less than 32 like 31 /34 inches they look great and no issue trail grapplers and 16 inch b72 wheels
from dtd great prices shipped to your door Im pleased with the results I alternate the stock ones and these and no recalibrater needed the trail grapplers give it a better stance however the stock ones are better for gas milage so with gas prices high I use the stockers lol

 

The stock Jeep wheels have a backspace of 6", not 4.7". You can run 33's on your stock Jeep depending on the width of tire you buy (10/11/12.5). Your best bet would be to install some quality 1.5" wheel spacers (which changes your backspace to 4.5") and you won't have to trim anything. Spidertrax or G2's are hubcentric and are a great buy, stay away from 1.25" spacers unless you want to cut off the ends of your lug nuts.