For a gs400 can we put 18x7.5 all around.Should we? Whats the differences in the widths of wheels like 18x7.5,18x8.5,18x9.5 etc..reply soon so I dont make a mistake...Thanks

 

B,

for the GS, you need at least 18x8 for a minimum tyre size of 235/40/18. 18x7.5 is too small for 235s, the tyres will not "clamp" on to the rims. in you want to stay the same size all around, i would do 245/40/18, on 18x8.5s.

william