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Cancer and Reproductive Harm
The 2024+ GMC Sierra 2500 AT4X AEV Edition is purpose-built for adventure, ready to take on challenging trails with its advanced suspension, factory skid plates, and aggressive 35″ tires. But for drivers who want to push the limits even further, stepping up to 37″ tires is the ultimate upgrade—delivering extra ground clearance and the confidence to tackle bigger obstacles. The challenge? The stock setup just isn’t designed for tires this large. Many owners find that fitting 37″ tires leads to rubbing, restricted wheel travel, and even potential damage when the terrain gets rough.
That’s where the AEV 37″ Tire Clearance Kit makes all the difference. Engineered specifically for your Sierra, this all-in-one kit comes with precision brackets, trim templates, plastic closeouts, and replacement lower fender flare extensions—everything you need to safely and confidently run 37×12.50″ tires on factory wheels or 37×13.50″ on AEV Salta XD Wheels. With these upgrades, your larger tires can move and flex as they should, even in extreme off-road conditions, without rubbing or causing harm to your truck.
We’ve also chosen materials that closely match your Sierra’s OEM plastics, so the kit blends right in with the factory look. The result is a clean, professional appearance paired with the rugged performance you expect from your AEV-equipped Sierra.
KEY FEATURES:
AEV 37″ Tire Clearance Kit for 2024+ Chevrolet Silverado 2500 ZR2 Bison and GMC Sierra 2500 AT4X AEV Edition Installation Guide
GMC Wheel Liner Trim Template
Wheel Liner Trim Template
Body Mount Trim Template
Closeout Trim Template
Fender Trim Template
Fender Trim Template B
No. The front closeouts are specific to the AEV bumper. Non-AT4X AEV Edition bumpers do not provide enough clearance for this size of tire.
No. The AEV lower fender flare extensions are specific to the AT4X flares. Fender flares on other trim levels are a different size and shape and will not integrate with the AEV extensions.
37x12.5 tires will work with factory wheels and this clearance kit. However 37x13.5 tires will require lower offset wheels, such as the AEV Salta XD, for backside clearance while turning. This is due to frame clearance not the closeout kit.
AEV recommends a 37x12.5 tire on OEM Bison/AT4X AEV edition wheels or 37x13.5 tire on AEV Salta XD (28401136/28401137) aftermarket wheels. Packaging is very tight and going taller or wider will likely cause tire rubbing.
This kit does require minor trimming of the front body mount and back side of the fender opening. However, these modifications are all hidden by the AEV closeouts and would also be hidden by the factory components if the vehicle were ever returned to stock.