Tire Tread/belt problems of the 2002 Suzuki Grand Vitara

Tires wearing out fast with low mileage on them, bridgestone p235-60-16 dueler h/t. Been complaining to Suzuki dealer about tires and steering on the car. In one month from last visit had to replace all 4 tires because of cupping on all four tires. Steering was shimming at 60 miles per hour bad andalso making steering go from left to right. Dealer wont do nothing. But service manager at tirapelli Suzuki stated Suzuki knows of a problem with these tires but the dealer doesnt warrant the tires. All they suggested was replace tires. If you look at the complaints for the Suzuki xr-7 you will see that this tire has been replaced before because of bad wear and cupping. Had to put out 361. 00 today for the tires and now the car so far drives ok. But only has 28161 on tires in wear and car isnt 1 year old.

I have a 2002 xl7 with 11,000 miles tires already have no tread, I also have problems with passenger side window making an awful noise. Sometimes when I give it gas it doesn't respond and will just plain give out on me. . . I suggest no one buy one please it gives SUV's a bad name. If anyone has info on my problems please contact me.