I've just checked that my spare tyre is actually smaller than my original tyre. The spare tyre is 13" while my tyre is 15" size. Is it ok to use it or I need to replace it with the same size?
Is it necessary to add 2T sx oil when fill up petrol in rotary engine ?? is it good or bad ?? ..... because I'm using the method for time being . I don't know whether it's good or not .