Tire question for new lift
I decided to finally get new shocks for my truck and originally was planning on only getting a 2.5 in leveling kit since I had bought new Michelin LTX AT2 275/65R18 tires only 1.5 yrs ago, but instead decided to go with a 4 in lift kit. So, I had the local shop here install a BDS 4 in lift w/ Bilstein 5100 shocks and on the bottom of the invoice they put a note that said, "Needs aftermarket wheels and tires to get rid of driveline vibration at 20 MPH."
So, is there any truth in their statement about tires or are they just trying to get me to buy new wheels and tires? Besides it not looking aesthetically appealing; do I need to get new wheels and tires or will I be fine using the ones I have on now until they wear out and then buy 35s? I was under the impression that driveline vibration was caused by the angle of the driveshaft shifting due to raising the truck. BTW they did not install a carrier bearing drop kit either.