What’s the biggest tires I can put on stock 2020 Silverado 3500? Single wheel
not correct. some 2020 trucks (those with 20" wheels) come with a 34" tire (275/65-20) from the factoryWheel offset will affect the biggest tire size, a 34" will rub on full turn. Start cranking the torsion bars and playing with wheel offset and things change, but I learned my lesson years ago and leave it alone and save my front end.
from all the research I have done, the 295/65 should fit. guys say they are running 35/12.5 stock no problem with no rubbing or trimming.Juat picked up my '21 3500HD AT4 yesterday and it has the 275/65/20's on it. I don't want to mess with my suspension at all. THerefore, I am only thinking of installing slightly larger tires. Will 295/65/20's fit? I am looking at a Ridge Grappler by Nitto. If not, surely a 285/65/20 will fit?
Any issue with the 3/4" wider tire in the 35/12.5? Just curious about the upper control arm and if the 35/12.5 will rub. I could always install a 35/11.50 or 285/65/20 as well.from all the research I have done, the 295/65 should fit. guys say they are running 35/12.5 stock no problem with no rubbing or trimming.
the 35 ends up being about 1/2" shorter, but about 3/4" wider than the 295
Great read man. After reading everything you got I have a couple questions for you and maybe you can help a little.Well said by MORSNO. To add to his response ... GM has maximized the amount of tire that will fit in the fender well at full turn when the suspension fully compresses. You can lift the front end by cranking up the torsion bars, but when you start cranking the torsion bars you change the angles on the CV joints, upper & lower ball joints, and the tie rods as well. Many people have lifted the front end by cranking up the torsion bars 2 inches on 2020’s to fit 35 inch tires, but this noticeably stiffened the ride. It also moves the upper control arm closer to the stop, so when the front suspension drops it hits the stop after only an inch or less of travel. This is where the leveling kits come in, many cheaper kits replace the upper control arm with one that is more arched to allow factory travel without bottoming out. However, this does nothing for the angles put on the upper & lower control arms, CV joints, ties rods, etc. So some guys purchase the more expensive leveling kits that include new knuckles (and upper control arms). This corrects the upper & lower ball joint angles and tie rod angles, but there is still a steeper angle on the CV joints and the stiff ride caused by turning up the torsion bars. All these steep angles cause premature wear on parts as MORSNO was alluding to. As you can probably tell, I been down this road on my 2019. I will never again install a leveling kit or crank up my torsion bars. So if you want bigger tires and want to do it right without sacrificing a nice ride and causing premature wear on parts, you are into a differential drop lift kit like I finally did. This lowers the front differential and returns all stock parts to the proper working angles. However, $3k for a differential lift kit, $3k for wheels & tires, $4k to re-gear the differentials, $2k to beef up the steering components for bigger tires, $1k for a tuner w/ display to correct the speedometer (which you should do if you change any tire size) and to fix all the error diagnostic codes that come up re-gearing differentials on an L5P. So you are $13k to do a lift kit right, actually, I am closer to $15k when it is said and done ... last step is re-gearing my differentials over Christmas. So was it worth it ... yes and no. The yes ... my truck actually rides better with bigger 35 inch tires and properly tuned shocks, but I also added Sulastic shackles to take the jarring hits out of my back end when I hit potholes or sharp dips in the road. Plus my truck looks sooo much better than stock, the tire size actually looks proportional to the truck size instead of those little factory donuts. The no ... it was extremely expensive to do a lift kit right on an L5P ... which you cannot even accomplish right now with a 2020 because there is no tuner developed yet for a 2020 that allows for differential re-gearing or speedometer correction. If it was me, I would put a nice set of wheels and stock size tires on, buy some lowering shackles to level the backend, and install a set of air bags so the backend does not sag when you haul or tow something heavy. Then start saving your money to do it right with a differential drop lift kit. Not trying to be a “know it all” nor cast a negative shadow on installing bigger tires ... just know I recently went down this exact road and it ended up being a very expensive lesson to get my truck back to having factory power and a similar ride ... and it all started with bigger tires.
Side Note: Regarding installing the lower differential gears over Christmas to get my factory power back with 35 inch tires ... I have lost an entire gear towing on the highway until I change the differential gears (it is like having a 5-speed now). Plus my truck lost significant bottom end speed and the transmission shift points are also wrong until I re-gear the differentials. Hopefully this is the last item needed on an expensive lift kit build ... however I can say it was done right.