I have 75K miles on my 07 sport and have always run larger than stock tires...295/40/20's. Over the last 15K miles or so the dash indicator for the tire pressure monitoring intermittently goes on and off. Tire pressure is good, same as stock tire size, 38/42. The dealer says the wheel sensors are working fine. Now they are saying it must be because of the larger tire size. That makes absolutely no sense to me...pressure is pressure. Any insight??? Thank you!