We spent all four seasons and about 13,000 miles both on- and off-road rolling with the General Grabber MT mud-terrain tires, and we’d do it all over again given the chance. Despite the fact that they are labeled as mud tires, the General Grabber MTs have proved to be a great all-around tire that works well in many different terrains, including on the street. The Grabber MT features hefty tread lugs and wide voids, which help shed mud quickly and grab onto jagged terrain. At the base of some of the voids you’ll find stone bumpers. These help prevent stone retention and drilling into the air chamber. The larger lugs feature smaller cut voids to improve tread flexibility and traction. Grabber MT tires have a three-ply sidewall, as well as a rim protector to help fend off flanking debris. Our 31x10.50R15LT tire weighs in at 50 pounds, which is only a few pounds heavier than the lightest tires in the mud-terrain category.
We mounted our General MT tires to a set of 15x8 Pro Comp 69 Series polished aluminum wheels. Each tire required 3-5 ounces of lead for balancing, which is slightly more than most tires this size. The real disappointment is that the Grabber MT is only available in five sizes, the largest of which is a 33x12.50. However, we suspect that the new Grabber X3 will eventually replace the Grabber MT. The X3 version features a similar tread pattern among other improvements and is currently available in 30 different sizes.
On-RoadAs with any aggressive mud-terrain tire, you will notice a bit of a hum emanating from the Grabber MT tread making contact with the road surface. It’s not at all unusual, and the tire is actually quieter than many other radial mud tires currently on the market. On our 4,000-pound 4x4, we ran the tires at 25-30 psi, depending on the load. They appear to be wearing well on our IFS 4x4 thanks to regular tire rotations every 5,000 miles or so. We should be on point to get between 25,000 and 30,000 miles out of our Grabber MT tires. We didn’t notice any unusual tire squirm in corners and braking was spot on. They seem to evacuate water well and don’t hydroplane abnormally.
Off-RoadIt took a few hundred miles for the tire carcasses to break in, flex, and conform to the terrain. On high-speed rock-strewn roads, we typically air down to about 20 psi. The smallish 31-inch-tall tires don’t leave a lot of room for error and impacts. With a larger diameter tire we might go with a little lower air pressure for a smoother ride, bigger footprint, and better flotation. Regardless, we never encountered any punctures or sidewall damage on our General Grabber MT tires. We confronted many areas with sharp granite clusters. This kind of terrain can quickly make some tires look like a dog chew toy. The General Grabber MT tires resisted chunking despite our efforts to drag them through the worst of it.
In the sand, we typically went with around 15 psi. Although, if we were planning on slow speeds and less aggressive driving, we might consider airing down to as low as 10-12 psi.
A mud tire usually isn’t our first choice for snow and ice. Large smooth mud-terrain lugs and slick surfaces typically don’t go well together. However, we found that in the little bit of snow and ice that we did encounter, the Grabber MT could hold its own. It wouldn’t be our first choice for a tire that sees regular seasonal snow and ice, we’d prefer an all-terrain tire for that application, but the Grabber MT is certainly a better choice than some of the other mud tires available if you have to make a compromise and find a tire that can perform admirably everywhere.
SPECIFICATIONS (as tested)Tire: General Grabber MT
Load range: C
Max load (lb): 2,270
Sidewall construction: Three-ply polyester
Tread construction: Three-ply polyester, two-ply steel, three-ply polyamide
Approved rim width (in): 7-9
Tread depth (in): 18/32
Tread width (in): 8.5
Section width (in): 10.5
Overall diameter (in): 30.8
Maximum psi: 50
Weight (lb): 50.0