tsl thornbirds?
Review of the Interco Thornbird TSL Radial (TSL = Three Stage Lug)
Now, we want to start off by saying, we really like Interco Tire Corporation and their true Mud Terrain tires. Interco has established themselves as the king of hill when it comes to street legal mud tires for common 4x4s at a reasonable price. We use Interco tires ourselves. With that being said, we really wonder what they were thinking when they designed the Thornbird TSL. Really. At first glance the Thornbird looks extremely aggressive. It has one hell of a profile with the knarly 3 stage lugs jutting out of the sidewall like medieval spikes on a chariot wheel. But to call it a true mud tire would be misleading. Within our definition of a true mud tire, the primary tread that makes contact with the mud is the same tread that makes contact with the street surface. With the Thornbird TSL, this tread is more specifically designed as a street tire with very narrow voids between the large, siped lugs. These voids seem more designed to channel water rather than mud. Which may be fine for some people who really want a street tire that looks like a mud tire. But for the offroader who is really looking for a good mud tire as the primary reason behind the purchase of the tire, we suggest you steer clear of the Thornbird TSL and look rather at Interco's other mud tires such as the Super Swamper SSR. That being said we can point out a few good qualities of the Thornbird. First the Thornbird isn't too bad on the street. A couple of people we know have had this tire and as long as the tires or rotated regularly and the front end kept aligned, this tire is relatively quite on the street. The tire looks impressive. We like the sidewall profile with its ugly lug patterns and raised white lettering. But it starts going downhill from there. Traction is about average for a larger mud tire however wet surfaces still requires awareness to the fact that you don't have as much traction as a tire designed for wet road driving. Even with some siping in the lugs they do not grip too well on wet road. Even less so in the snow due in part to the narrow voids between the lugs which do not self clean very well, which helps to explain why this tire can hardly be called a true mud tire. But enough of our ranting. The Thornbird is not all that bad and may actually be what some people are looking for. Size availability ranges from 29x10.50 to 38.5x14.50 in 15, 16 16.5LT with 6 or 8 ply rating model dependant.





