My 2014 Sierra A/T - RC Level and 33x12.50r20 Toyo MT

[jenkins12]

 

 

 

RC 2.5" front and rear on 33x12.5x20 Toyo Open Country MTs

[L86 All Terrain]

I was told that the 33x12.50x20 would rub so I went ahead and got the 295 55 20 toyo mt's and I do have a pro comp 2.5 level

 

 

Many 295/55R20's have and overall diameter closer to a 33x12.5 R20. My 33x12.5's are also stamped in fine print 295/55R20 and they rub just barely on the sway bar with the same wheels as you. I was told the Toyo is also branded often as a 33x12.5. Not sure on the reason. Measure your tread width, I bet its larger than 295mm.

[Daryl Z71]

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RC 2.5" front and rear on 33x12.5x20 Toyo Open Country MTs

Looks sharp!

[Needatruck]

Hey guys, picked up my truck about 2 months ago and have been doing a few things to it. First thing I did was remove the boards, tint and added the Z71 emblems. I've also added a 2.5" RC Level and 33x12.50r20 Toyo MT. Lovin' it so far.

 

Couple pics:

 

 

 

 

 

Beauty! Is that the short box bed or standard box? Great looking truck

[jenkins12]

Looks sharp!

Thanks so much!!! My first 2 vehicles were pickups but have spent the past few years in Wranglers and a 4Runner. It feels so good to be back in a truck!!!

[kcameron]

Dude dale yea!

[Travis1024]

Hey guys, picked up my truck about 2 months ago and have been doing a few things to it. First thing I did was remove the boards, tint and added the Z71 emblems. I've also added a 2.5" RC Level and 33x12.50r20 Toyo MT. Lovin' it so far.

 

Couple pics:

 

 

 

 

Looks amazing man. Wanting my '16 to look like this. How are the ball joints and everything holding up? what about ride quality? seems like everyone says 2 - 2.5 in the front is the sweet spot. Looks damn good to me.

[Sean Neilan]

What gears do you have? 3.42 or 3.73? Do you feel you need to regear to keep the power or is 33 not a big enough jump to warrant different gears? I've heard with 35's you'll want to go to a 4.11 setup so I'm curious about the 33's. Also worth reprogramming the speedo or not enough of a difference to bother?

[crushNchowda]

What gears do you have? 3.42 or 3.73? Do you feel you need to regear to keep the power or is 33 not a big enough jump to warrant different gears? I've heard with 35's you'll want to go to a 4.11 setup so I'm curious about the 33's. Also worth reprogramming the speedo or not enough of a difference to bother?

I can't comment per se, as I have yet to add bigger tires myself (although I am lifted 2.1" from bilsteins + 1" extra in rear), but I do not see gearing an issue w/ 35" tires either way w/ the 5.3 or 6.2 trucks as long as you dont have a 6 speed 5.3 w/ 3.08 rear. If its a 6 speed w/ 3.42 I'm sure it'll feel sluggish but not horrible, and I bet w/ 3.73's is just fine, I would think $$$$ wise you'd be better offsetting the drop in pickup by getting a custom dyno tune as that will help power, shift points, and should add to MPG's while a gear swap is huge $$$, you void warranty (not that it matters @ that point), you'll still need a tune, while it'll have more pickup forget about ever getting decent mileage ever again.

Keep in mind these are DI engines w/ alot of performance tuned down to help GM w/ safety & cafe requirements - you will notice BIG difference w/ just a tune, not to mention you're talking 4.10's like this is 1995 and we're dealing w/ 4 speed trucks - you have way more power in the trucks now + 6, 8, 10 speed trannies - throw out your old preconceptions about what gears you need. If it were me I'd spend that kinda dough on a good tune & some nice stainless headers.

 

Other strategy to offset mpg/performance drop from heavier tires other than power adders/tune/gears is trying to pair the heavy AT/MT tires w/ a lighter and/or smaller diameter wheel. Stock wheels are damn heavy.

[gSwift]

What gears do you have? 3.42 or 3.73? Do you feel you need to regear to keep the power or is 33 not a big enough jump to warrant different gears? I've heard with 35's you'll want to go to a 4.11 setup so I'm curious about the 33's. Also worth reprogramming the speedo or not enough of a difference to bother?

 

I have 35's on mine with a 5.3 and 3.42's and the guy that installed my lift and tires thought it was a 6.2 cuz it pulled them so well. I think 4.11's would be good if someone wanted 37's

[dauthier]

does anyone run this setup with the gm molded splash guards? I am Looking to go 2.5" with Toyo 33x12.5R20 on my new truck and don't want them to hit my painted splash guards.

[REYisKING]

Used this post as a blueprint for my Chevy. Found some factory GMC wheels on Craigslist, went with the RC 2.4" X 2", and Nitto Ridge Grapplers 33X12.5X20. Rides great, and rubs at full crank of the wheel as expected. Has anyone here has used a programmer to compensate for the larger rolling diameter? Whats a good programmer?

 

[REYisKING]

Hey guys, picked up my truck about 2 months ago and have been doing a few things to it. First thing I did was remove the boards, tint and added the Z71 emblems. I've also added a 2.5" RC Level and 33x12.50r20 Toyo MT. Lovin' it so far.

 

Couple pics:

 

 

 

 

[REYisKING]

Nice truck. What tire pressures are you running?

Also has anyone used a programmer?