trustmaster

Hi I am new to this site so please bear with me. I have a 2000/X plate Lexus IS 200 SE auto, which has done 92,000 miles. The car is great and I am pleased with the purchase. The only problem I have found is a grinding noise coming from the front wheels, it only happens at speeds under 40 m.p.h. Is this quite common on these cars at this mileage? Any input would be gratefully appreciated. Thanks TM