Tire and wheel sizing questions
 

So I purchased a 2003 f350 with a 7.3 in it. I'm new to all this stuff so this may be a simple question. I'm looking to replace the tires but would like to keep the wheels . Currently the tires on it are 37x13.50r18.
My question is, what other tire sizes can I use on those wheels? How do I figure that out? I've never had oversized or mud tires so this is all new to me.
Thanks

Hi DieselNoob!

Finding new tire sizes for stock wheels can be tricky. You'll want to find the stock wheel width to help you out. We can tell by your tire size that you have an 18" wheel, but what we really need to know is the width of those stock wheels. Since you have an 18" wheel, you most likely have aftermarket wheels on it as the stock wheels (from what we can find) are 16" in diameter. Try removing a wheel from your truck and looking on the back side of the wheel for any numbers that may be imprinted. A lot of aftermarket wheel companies print the size of the wheel on the back. Like this:
https://cimg6.ibsrv.net/gimg/www.tru...dad0a05e84.png