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113 Posts
I was shopping for tires for autocross and came across some discussions on unsprung/rotational weight loss vs power increase.
Then I start thinking since the sport rims are heavy, compare to RV6 pipe+ ktuner method, switching to lighter rim might be equal or more cost effective to improve a sport's acceleration and handling.
So I did some quick calculations.
Stock sport rim + tires(Mine is Eagle LS-2)= 28+25=53lb
ENKEI TS9 17X8 + Pilot super sport = 18.65+22= 40.65lb
It will lose 12.35lb per wheel and total of 49.4lb unsprung/rotational weight.
Total cost=573.96(tires)+780(Rim)= $1353.96.
The stock wheels+tires probably worth at least 600+.
Then the cost of switching rim/tires and RV6 pipe/ktuner would come out about the same.
With the weight loss mod, you improve acceleration, handling(a lot) and MPG. To me it comes down to the question how much WHP/tq and throttle response this 49.4lb unsprung/rotational weight loss mod will actual get you.
It would be nice if anyone got a dyno for the weight loss mod.
Then I start thinking since the sport rims are heavy, compare to RV6 pipe+ ktuner method, switching to lighter rim might be equal or more cost effective to improve a sport's acceleration and handling.
So I did some quick calculations.
Stock sport rim + tires(Mine is Eagle LS-2)= 28+25=53lb
ENKEI TS9 17X8 + Pilot super sport = 18.65+22= 40.65lb
It will lose 12.35lb per wheel and total of 49.4lb unsprung/rotational weight.
Total cost=573.96(tires)+780(Rim)= $1353.96.
The stock wheels+tires probably worth at least 600+.
Then the cost of switching rim/tires and RV6 pipe/ktuner would come out about the same.
With the weight loss mod, you improve acceleration, handling(a lot) and MPG. To me it comes down to the question how much WHP/tq and throttle response this 49.4lb unsprung/rotational weight loss mod will actual get you.
It would be nice if anyone got a dyno for the weight loss mod.