what's the smallest tire size for this rim?

[p4spares]

hi,
some years ago, i bought a set of 2th hand wire rims. 15inch x 4.5inch, from an MGB as i remember, and was fitted with 155R15 tires.
during the time, i changed a bit my mind about the size of tires. now i believe the car (vintage style) will look better with a bit smaller (width) and bigger diameter tires (wall). anybody can help me to understand wich sizes i can (reasonably) use without change the rims?
thanks,
David

[MartinClan]

You might get away with a 135 x 15. They are still available as they are used on the 2CV. Good quality ones are expensive though. Try one of the 2CV specialists.

Robin

[Mike]

Have you tried one these tyre size calculator sites?

This an example:

http://www.etyres.co.uk/tyre-size-calculator.htm

Type in what you have, and then try what you would like to compare.

The problem could then be availability.......................