I currently have a 1993 chevy regular cab with a 6" suspension and 3" body. I have 37 12.50s on it at the moment. Im looking to go bigger, im wondering if anyone would know or have an idea about how tall I could go and how wide that would still fit. Thanks.

 

Make a call to a local tire shop or the guys at 4wheel parts. I'd think you can at least go with 40's and probably around 15wide with proper backspacing on the wheels.