Nice write up but the supply chain on 15" tires is thinning. The modern look of larger rims is here.. What I try for a more modern look, is to use tires that have about the same OD as the OEM tires. This way the speedometer error will be minimal or not at all.
For 17' wheels I use 225 x 45 R17 rear and 205 x 45 R17 front
For 16's wheels I use 225 x 50 R16 rear and 205 x 50 R16 front
As for 18's I wouldn't use them. The ride is rough enough with the 17's. Actually the 15" tires provide the best ride but IMO the larger rims do modernize the look..
Not trying to hijack your thread; just provide something useful as you have done.
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