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Tire diameter and effects on performance tested.

7K views 7 replies 7 participants last post by  BoostedGen2010 
#1 ·
#4 ·
thanks for that - been having problems with my 18" wheels on Volvo S60R, so it was interesting to see this as I didnt have any problems with the S60 T5's 17".
Also, the only version of the Genesis Coupe here is the Track and its 19" wheels(Kuwait agent in fact the salesman cant even tell what version of the Coupe it is!). So I had been wondering what would be the sacrifice in terms of wheels and performance if I opted for the Coupe GT and its 18"ers. Tnx again
 
#6 ·
The 18"s would be a little lighter & help slightly with performance & fuel economy as shown above. But, the GenCoupe 19"s look soo much better than the stock 18"s. Aftermarket FTW.
 
#7 ·
Just some food for thought, the RPF1's I have on my car now weigh almost half as much as the stock wheels/tires! I love the added spine protection from the slightly larger profile of the 40-series Nittos I have on there and the car feels so much lighter on it's feet. I honestly think that 18's are a good compromise on this car with all things considered.
 
#8 ·
Hey, if I want to run the Rota Grid in a 19x9.5 in front and 19x10.5 in the back what offset do I need? and tire size to shop for? Would that be like a 255/35R19 from and 285/30R19 rear? to fit with no rubbing? I don't really want to be on a rubber bad tire can I keep a 35 in the back?
 
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