Hello,
I am in the process of looking to lease another MX for my wife. Her current P90D lease is ending soon.
Current car has 22" OEM wheels. The range reduction due to them is fairly high... close to 15-20% as documented everywhere.
I started looking into purchasing lighter than OEM truly forged 22" for a new car but here is what I do not understand:
The OEM 20" rear wheel and tire weigh about 33.2lb for the wheel and 33lb for the tire = 66.2lb
The OEM 22" rear wheel and tire weigh about 40.4lb for the wheel and 36lb for the tire = 76.4lb
See attached screenshots for weights.
What I do not understand is how 10lb (per corner) of unsprung weight can cause such a huge decrease in range... plus the rolling diameter of both 20 and 22” tires is identical.
It is equivalent of only about 160lb of dry weight on a 5000lb+ car
Please let me know if I am missing something as buying lighter 22" forged wheels should not have that much effect on range.
Thank you for your input.
I am in the process of looking to lease another MX for my wife. Her current P90D lease is ending soon.
Current car has 22" OEM wheels. The range reduction due to them is fairly high... close to 15-20% as documented everywhere.
I started looking into purchasing lighter than OEM truly forged 22" for a new car but here is what I do not understand:
The OEM 20" rear wheel and tire weigh about 33.2lb for the wheel and 33lb for the tire = 66.2lb
The OEM 22" rear wheel and tire weigh about 40.4lb for the wheel and 36lb for the tire = 76.4lb
See attached screenshots for weights.
What I do not understand is how 10lb (per corner) of unsprung weight can cause such a huge decrease in range... plus the rolling diameter of both 20 and 22” tires is identical.
It is equivalent of only about 160lb of dry weight on a 5000lb+ car
Please let me know if I am missing something as buying lighter 22" forged wheels should not have that much effect on range.
Thank you for your input.
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