rikhek

Several months ago I installed 35" Toyo AT3's on my AT4 along with the RC 2" leveling kit. I like them a lot. NO regrets. FWIW, I've run BFG's for literally several decades and just wanted to try something different.

UPDATE: Don't waste your time on the Amazon sourced LEADTOP specific lights I used. One of the lights burnt out after about 3 months followed by another a couple weeks later and a third one today. Shows you get what you pay for. FYI, the friction fitment held up GREAT. They didn't move at all. I need to find some high quality lights that don't burn out so quickly. Did anybody find a better price for the 3 light Raptor looking setup shown in this thread. The link provided says they cost $80. I won't pay that much just out of principle

UPDATE: Don't waste your time on these specific lights. One of the lights burnt out after about 3 months followed by another a couple weeks later and a third one today. Shows you get what you pay for. FYI, the friction fitment held up GREAT. They didn't move at all. I need to find some high quality lights that don't burn out so quickly.....

https://www.gm-trucks.com/forums/topic/243158-at4-with-rough-country-2-leveling-kit-and-35-toyo-tires/?tab=comments#comment-2457829

Don't be so lazy. Search through the threads we've worked hard creating and populating for people like you. We shouldn't have to do your homework for you, especially considering we've already done the work. If Search engine is lacking then go through the threads one-by-one like the rest of us.

It's about time somebody asked this question!!! Oh wait, never mind, I forgot it's been asked/discussed ad nauseam in over 5,000 different threads...

WOW!!! Finally somebody asked a question about tire fitment......

They'll fit fine as long as you only drive in a straight line. You WILL HAVE rub with the inboard front fender liner and "probably" in the rear of the fronts at the mud flap and/or liner. I just installed 285/75/18 on OEM wheels on my AT4 with the Rough Country 1318 - 2" leveling kit and they just clear at full lock and no articulation. I imagine if the suspension is heavily loaded while off-roading and near full lock I will rub the fender liner on the inboard side in the front. It's really close without any articulation. Tires I installed are the Toyo Open Country AT3 in 285/75/18 which are 34.8" x 11.3". If I do rub it will be minimal and I can get a little more room if I zip tie the liner back as many have done. Anything wider than 11.3" would cause me problems.

No. My truck would rub well before full lock if I ran a 0.4" wider tire even with a tire that is slightly "shorter. Might fit if I were to tie back the liner in the front and remove the mud flap mounting bracket. It would also get close to the UCA ball joint...

I recently installed 35's on my AT4 and found only two options for recalibrating the speedometer. Both Rough Country and Hypertech sell calibrators for $200 and $230 respectively. My speedometer is off about 4 mph at ~70 mph. I haven't bought either as I can live with it being off instead of spending over $200 just to get it correct. Additionally, there are numerous discussions on this forum and elsewhere online by numerous purchasers reporting functionality issues with both units.

Yeah, my philosophy with 4 wheel drive vehicles that are actually used off road is to fit the smallest "wheels" that will clear the calipers along with tires with the tallest sidewall. I personally don't understand putting large wheels with low profile "rubber band" tires on a 4 wheel drive vehicle. It defeats the purpose. Note I emphasized smallest "wheels" to make the point that they're not RIMS, they are wheels. One of my pet peeves is when folks call wheels "rims". A rim is just one component of a wheel. I know most find this to be petty but I just can't help myself. Calling a rim a wheel is like calling a cylinder head an engine... ?

Yeah, you're correct. I didn't think that through but different tire size won't change UCA angle. My comment was based upon just a visual observation. With the truck up higher I think it just gives an optical illusion of the angle being less severe. Changing the center line of the spindle/axle up or down doesn't change the control arm angles. Sort of funny as looking at it right now it still looks like a less severe UCA angle even though I know it's unchanged. Sorry, my bad for posting without thinking it through and just going upon what I thought my eyes were telling me. I've corrected my original post....

AT4 with Rough Country 2" Leveling Kit and 35" Toyo Tires I wanted to share the fitment of a Rough Country 2" AT4 specific leveling kit and 35" tires on 18" OEM wheels with the forum. After installing the AT4 specific RC leveling kit I was able to fit 285/75/18 Toyo Open Country A/T III tires without any rubbing. The tires are advertised as being 34.8" tall and 11.3" wide. I don't have any rubbing at full lock but it's pretty close. I think if I was at max articulation and full to nearly full lock in an off road setting I'd rub the fender liner a bit. Not enough to do anything about it but it would just rub. In over 1,000 miles of daily driving I've not rubbed a single time. Noteworthy comment/observations: 1. If I went with a 35" x 12.5" I would have significant rubbing with the fender liner. A true 12.5" wide 35" would not have adequate clearance. This is one of the reasons I went with the "narrow" 11.3" wide Toyo's. 2. Make sure you get an alignment after installing a leveling kit. My truck was significantly toed-out, outside the acceptable range with the leveling kit and resulted in a "darty" ride with a "floaty" feel. After getting an alignment and some toe-in the truck drives much better.

I wanted to share the fitment of a Rough Country 2" AT4 specific leveling kit and 35" tires on OEM 18" wheels with the forum. After installing the AT4 specific RC leveling kit I was able to fit 285/75/18 Toyo Open Country A/T III tires without any rubbing. The tires are advertised as being 34.8" tall and 11.3" wide. I don't have any rubbing at full lock but it's pretty close. I think if I was at max articulation and full to nearly full lock in an off road setting I'd rub the fender liner a bit. Not enough to do anything about it but it would just rub. In over 1,000 miles of daily driving I've not rubbed a single time. Noteworthy comment/observations: 1. If I went with a 35" x 12.5" I would have significant rubbing with the fender liner. A true 12.5" wide 35" would not have adequate clearance. This is one of the reasons I went with the "narrow" 11.3" wide Toyo's. 2. Make sure you get an alignment after installing a leveling kit. My truck was significantly toed-out, outside the acceptable range with the leveling kit and resulted in a "darty" ride with a "floaty" feel. After getting an alignment and some toe-in the truck drives much better.

The OEM mats that came with my 2019 AT4 are FANTASTIC! Better than ANY aftermarket, vehicle specific mats I've bought in the past. I was very pleasantly surprised to see the General step up to the plate and put decent, high quality mats in the truck. Well done!!!