So let's play "what if" - what it I were trying to catch a flight and an unnoticed bubble blew out the sidewall?
How feasible is it to obtain an aftermarket tire to serve as a spare on long/remote/critical trips? What is the smallest wheel size that someone can toss in the trunk that will fit properly over the brakes that would safely serve as a short-to-medium duty spare?
I ask only because last week I had a bubble on my GTI (225-40R18) that I noticed only by good fortune while washing the car. It very realistically could have blown on me at any time.
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