stockman wrote:
7.5" off a tape measure is only 190mm, would a 235 be safe to run on 4.5'' rims?
Just measured them and the tread is only 7"/180 wide. Plus I've been telling everyone they are 32s (got that from measuring a fully inflated spare) but on the car they are closer to 31 than 32

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Minimum recommended rim for 7.50s and 235s is generally 6" but I've also seen a 5.5" minimum listed for 7.50s. When I bought the tyres the shop didn't want to fit them to 7" rims but was OK with 4.5s. They've now been on 6 trips without any problems.