Tire size help needed!

[Imperial144]

Hey all, new here, have been lurking for a while and finally made an account. I have a 21 LT trailboss, I am running the RC 1.5” leveling kit and am waiting on Bora 1.5” spacers. I am planning on putting ko2’s on the stock 18” rims, any guidance on the largest size I can run without issues would be greatly appreciated! I will do the mudflap trim if need be, thanks again for any insight!

 

[Jmzvet]

295 70 18 is what I have with exact same set up as you. You might be able to go with 305s or 35 12.5 18 but I can’t confirm it.

 

[BigBadChevyMN]

As for size of tires that fit. I just put on 35x11.5x20 and the wheel is a 20x9 with 0 offset and the only place I had a very minor issue with was the mud flap as others stated. My tires Falken Wildpeak RT/01's show that they measure 34.8in.

I would think if you went 12.5 wide it would involve more modifications to get to fit.

 

[Imperial144]

295 70 18 is what I have with exact same set up as you. You might be able to go with 305s or 35 12.5 18 but I can’t confirm it. is exactly what I was looking for, you are the man! I was trying to search the site for a picture of your truck but couldn’t find one, if you don’t mind and have a minute

As for size of tires that fit. I just put on 35x11.5x20 and the wheel is a 20x9 with 0 offset and the only place I had a very minor issue with was the mud flap as others stated. My tires Falken Wildpeak RT/01's show that they measure 34.8in.

I would think if you went 12.5 wide it would involve more modifications to get to fit.

Man, that is awesome and exactly what I was looking for! Would love to see a picture of your truck if you have time! I appreciate the quick response, this forum is awesome

 

[Imperial144]

As for size of tires that fit. I just put on 35x11.5x20 and the wheel is a 20x9 with 0 offset and the only place I had a very minor issue with was the mud flap as others stated. My tires Falken Wildpeak RT/01's show that they measure 34.8in.

I would think if you went 12.5 wide it would involve more modifications to get to fit.

I love the look of the stock 20’s, was debating on buying some rims, but it’s not in the cards right now, would love to see a picture of your setup as well! I’m sure you guys have them posted somewhere on the forum, I have yet to find out how to look for member setup pictures though! Appreciate both of you guys help and reply’s!

 

[Jmzvet]

 

[Imperial144]

View attachment 8305View attachment 8306

Good lookin truck right there!

 

[Btstaug]

Hey all, new here, have been lurking for a while and finally made an account. I have a 21 LT trailboss, I am running the RC 1.5” leveling kit and am waiting on Bora 1.5” spacers. I am planning on putting ko2’s on the stock 18” rims, any guidance on the largest size I can run without issues would be greatly appreciated! I will do the mudflap trim if need be, thanks again for any insight!

I bought a 21 LT trail boss a few months back which had the stock duratracs and 18” wheels. Man those tires were loud af, total garbage. Just did a level, 20” wheels and Nitto recon grappler 35x11.5.

 

[buckshot85]

I bought a 21 LT trail boss a few months back which had the stock duratracs and 18” wheels. Man those tires were loud af, total garbage. Just did a level, 20” wheels and Nitto recon grappler 35x11.5.

What are the wheel specs?