VW made 4 lug 4" rims too (they were on '68 & 69 model year - not certain of other years (assume 4.5J) but size 4Jx15 is stamped on rim). Be sure to carry a scissor's jack and lug wrench even if you don't carry a spare. The Fix-A-Flat may die before inflating a tire with the car's weight on it so jacking it up could help (plus you can remove tire and have it repaired/replaced). Remember alloy wheel bolts are most likely different than steel wheel bolts.