Biggest tire on stock boss

[as73]

Problems With the Chevy Silverado HD 10-Speed Automatic Transmission

GM's Allison 10-speed automatic transmission used behind its Duramax diesel engines is a strong, dependable unit. But issues can occur, as we discuss.

www.motorbiscuit.com

See above

TonyBoss
That is not the 10 speed in the 1500 series trucks.
The Allison 10L1000 10-speed transmission is used in the 2500HD trucks

 

[TonyBoss]

Well that’s good news for 1500 owners- good catch

 

[tommysf13]

Anybody running 33x12.5x20?
Assume they would rub without some trimming?

I'm on this setup. Little by little the tire installer trimmed my front flaps. The flaps are cut 2/3 but still mounted with the 3 screws. I do get some rub at full turn or uneven surfaces. I do have a 1.5" leveling.

 

[BDR45]

wondering what tire sizes you guys are getting away with without additional lift! I'm wanting to stuff 305 65s on my stock wheels.

To

wondering what tire sizes you guys are getting away with without additional lift! I'm wanting to stuff 305 65s on my stock wheels.

I own a 2022 trailboss. I measure very carefully. Stock you have about 2 inches of clearance when front wheels are fully turned.....and a juuuiist about 1 inch from back of tire to the upper control arms. I have the 4cyl Turbo engine so I wanted to be careful and keep things as stock as possible. I researched for about 2 months and finally decided on Goodyear duratrac 295/65/18. They are about 1 inch taller and 1 inch wider and look perfect. I did remove all of the mudflaps and have the black plugs coming to fill the 4 holes. Tires fit perfectly and no rubbing whatsoever. I personally love the duratrac tire as far as function and look. Again I didn't want to do spacers...leveling kit...or stress the front end of car by adding bigger tires. I've read that bigger tires have fit with minor mods but I didn't wanna do that.

 

[BossHunter]

wondering what tire sizes you guys are getting away with without additional lift! I'm wanting to stuff 305 65s on my stock wheels.

Wondering if you decided on the 305 65s and how they fit?

 

[TonyBoss]

I went with the Falken AT3W 295/70/18 on stock rims- confirming no rub.
Will be doing a 1.75 readylift kit soon.

 

[TonyBoss]

You guys that are running the same tires with the 1.75 lift, what is the clearance to the UCA?
Stock height I’m about 3/8” away from the tire-
Assume the Readylift UCA will give a little more clearance?

 

[LeeBlanton]

Go Rhino Dominator D6 running boards... they are good for ground clearance.View attachment 430

I have those on my 22 Custom, easy install and look good.

 

[Mars13]

I put Toyo 195/70's on mine. So, 34X11.5 roughly. I had to remove the mud flaps when I added Bushwacker fender flares. When I added the tires I had to remove the mudflap brackets and add 2" wheel offsets. When that was done I had no tire rub. Before the spacers It rubbed bad. Hell of a racket. I've read on the GM forums that you could put 195/70 without any rubbing. Anyone who says that is wrong.

Looks really good! Do you have a level kit or any kind of lift on your truck? Also, can you please provide info on the wheel spacers you used?

 

[Mars13]

View attachment 2873

Looks good! What is the make and offset on the wheels? Are you running spacers?

 

[Budsolo]

I ended up having the 295/70’s mounted this week and can confirm there is no rub without spacers

Could you post some close up pics of your wheel and tire setup, definitely looking at going this route.

 

[JP20TB]

I know it’s a cost but getting the proper wheel offset to achieve the proper stance and control arm clearance. is best over spacers .. it’s so obvious when running spacers on stock wheels,..but I understand it’s an expensive expense buying a new set of wheels … and the gloss black trail boss wheels are very nice but not their positive 26 offset…just had my new wheels installed (ICON zero offset) , been out of town will post better pictures gents.

 

[JMC154]

I've been following this thread this summer and I'm about ready to get rid of my stock tires on my stock 2020. I'm stuck between 295/70/18 and 285/75/18. I'm leaning towards the taller sidewall but this thread seems to favor the 295/70. Is there any reason for that? I'm thinking KO2's, no plans to lift, planning on trimming as necessary. Thanks for your suggestions!

 

[Jmzvet]

Minimal difference in size. I’d get whichever one is cheaper.

 

[JMC154]

Yeah sidewall height seems more important to me than tire width. I was surprised to see more people seem to choose the opposite. I haven't called me buddy yet to check pricing and availability.