AppDawg

See above. they'll fit stock but typically everyone levels the front as they could possibly rub depending on wheel offset. As far as the blocks; you don't need them but many install them to keep some rake so that they can still haul/tow without the truck being nose high. I've seen tires 34"+ fit with just a 2" level.

drew3287

Here are some other posts I've seen with some good looking tire/wheel combinations (most are just a little bigger, but very similar to 305/55/20's):

It's michael621's truck. He went with a little bigger tire. Check out his garage and albums.
https://www.f150forum.com/f38/hellbe...1-f150s-81638/

Here are a couple trucks running 33x12.5x20's:
https://www.f150forum.com/members/fg...-wheels-tires/

It's the truck posted by WVScrew:
https://www.f150forum.com/f38/post-p...37609/index36/

Here's a 2007 with 305/55/20's:
https://www.f150forum.com/members/kr...305-55-20-bfg/

Here's a website for doing tire comparisons and mileage difference calculations:
http://www.dakota-truck.net/TIRECALC/tirecalc.html

ffpetest53

Not much.

Nutty 5.0

Can anyone with stock rims take a picture from the side to show if the tire sticks out past the fender?

Thanks!

Westbayou

I had my mind made up on a set of the Cooper Zeon's, but after seeing those Trail Grapplers I'm not so sure. I've got a gray truck like yours with the gray factor 20's. My only worry is the offset on the stock 20's is going to cause the Trail Grapplers to rub in the 305/55/20 size. Thoughts? I'm thinking a set of the Trail Grapplers would be sick on my truck, but I wonder if I'd have to go with a 275/60/20 for clearance purposes.

Nutty 5.0

I have heard the TG's are a bit wider and one of my reason's to not get them. Mine are being installed today so hope to have some pictures and opinions soon for you.

Nutty 5.0

Finally here it is. I hope to have more later... Cooper Zeon's with 2.5" AS level and 3" AS rear blocks.

PawPaw

Look's great Nutty, any rubbing or do they clear on the inside OK?

Nutty 5.0

Not sure Paw Paw. I won't get to pick it up until this afternoon. I'll report back later.

Westbayou

Sharp!