Hi - Have identified the small bulge on the front left tyre. Iam keeping the tyre pressure at 34. Punture shop guy told me to rotate the tyre to back. He is saying it will cause problem while doing the hight speeds >100+. Is it really a problem ? Bulge is there but i didnt find any problem in the tyre condition. Can i rotate the tyre to back or do you want me to use the 5th tyre?