hey there, I know this is'ent dodge related but a work friend is trying to find studded tires for his 2002 lincoln ls his tire is P235,50,r17 and all of the local places he has tryed say there arn't any studded tires for his car. so I thought I would check online for him. so I am wondering if there are other sizes that might be more commen? I would love some help or idea's. he needs more grip on the ice cause its rear wheel drive. thank you!