Wah, got a few closet Beetle lovers out there who are also BMW fans, huh? Strange, because the only thing that BMWs have in common with rear engined VWs is the fact that they are both German!
Karmann Ghias are very rare in Malaysia. I've only seen 2 so far and they belong to the same owner/family who lives in Bangsar.
beemer04, a lot of Beetles use 195/65R15. I wouldn't, because of (1) the original look is important to me, and (2) the original rims (4in width for 1967 or earlier, 4.5in for post-1967) are much too narrow for 185 or 195 section tyres and fitting such tyres on the original rims may be dangerous.
Quiksave (or is it Quicksave), a local tyre store, has informed me a few months ago that they have 185/65R15.
beemer04, whether or not a tyre can fit your car, you have to firstly check the tyre calculator post.
Also, why don't you go for 165/80R15 (used to be known as 165R15)? The car would ride AND handle better on 165/80R15 tyres if you are using stock rims.