What size tires can i put on my gmc sierra?

You’ll be limited to the biggest 32-inch or a small 33-inch tire. A leveling kit will help with wheel clearance, however, the best option for your Sierra is to opt for a 3” suspension kit if you want to run wide 33” comfortably.

As a general rule of thumb, it’s safe to fit a tire Up to 20 millimeters wider than stock on the original rim. The actual width of the tire will vary depending on the width of the rim: The tire will expand 5 millimeters for every half inch (12.5 millimeters) increase in rim width.

GMC Sierra 1500 Tire Sizes

Tires for the GMC Sierra 1500 come in the following sizes: P245/70R17. P235/75R16. P245/75R16.

Trucks with big tires are advantageous because you get taller driving visibility, gravel/dirt/off-road traction, ground clearance, towing stability, stopping power, and overall height.

A lift is required on most vehicles to accommodate 35-inch tires. The lift size needed can range from 3.5-6 inches. An exception is the new Ford Bronco, which requires no modification to fit 35s. Some trims even come with them from the factory!

So the takeaway here is, without a 2” or 3” suspension upgrade or leveling kit and you really want to fit 33” tires, you’ll need to do cutting and trimming of wheel wells. You’ll be limited to the biggest 32-inch or a small 33-inch tire.

A 35” tire offers approximately 1 inch more clearance at the axle compared to a 33-inch tire. Now that might not sound like a lot, however, that 1 inch can mean the difference between being hung up and just managing to scrape over the obstacle.

Additionally, larger tires weigh down the wheel assembly — which May affect fuel economy and place unnecessary stress on the powertrain and brakes. If planned or installed incorrectly, up-sized tires may also rub the wheel well, brake calipers, or vehicle frame, potentially wearing down any parts they grind against.