Hello. 1st post and maybe someone can share their imput. I have a 1971 pinto and want to leave it stock except wheels & tires. I would like to put a 15x4 on front and a 15x8 on rear. I know I will have to get the correct back spacing, But don't know what size tires to go with. I don't want too big and get rubbing. any advice will be greatly appreciated.