Ya some shops won't touch it if the tire size your getting isn't stock and/or the truck is modified. Pepboys, Sears, Discount, Express Tire (in Cali), Firestone and Big 10 never gave me problems. Walmart actually hasn't either but the only modified vehicle I actually brought in was my 98' Z71 to have Swampers mounted, I usually carry my tires/wheels in to them since they are the cheapest for mounting/balancing around here, $10 a wheel.