I don't know for sure, I've got a U44 butI can fit the 175 width. Its very close, like less than 1.8" of space between tire and shock That being said it works and I run that size all summer and go skinnier in winter... My vote is for the skinniest lightest tire you can find
Also, with a 14" tire, you will likely rub the front of the wheel well, especially if you have a passenger or you are turning sharply. A 4" lift may solve this issue?