RX8Club.com - Lightened rotors...does .2lbs really make a difference?

RX8Club.com (https://www.rx8club.com/)

- Series I Aftermarket Performance Modifications (https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/)

- - Lightened rotors...does .2lbs really make a difference? (https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/lightened-rotors-does-2lbs-really-make-difference-148297/)

Lightened rotors...does .2lbs really make a difference?

http://www.therpmstore.com/product_i...roducts_id=209

I haven't been able to find any threads on this with search. Does anyone on the forums have these, and what type of numbers are you getting?

How much difference?

you reach the rev line a little quicker. I think it makes it a littlE SAFER FOR HIGH BOOST APPLICATIONS yeah i dont know why there are caps either... hahah

its rotational mass. of course it makes a difference.

the 13b renesis rotor weighs 9.3lbs. .2lbs is a ~1.8% difference. each rotor, thats 3.6%.

i know removing 1lb off of a rim equates to removing 4lbs off the chassis because rims are rotational mass. i dont know how this equates to engine output, but 99.99% sure the difference is easily noticed on a dyno.

its all whether you think the money spent is worth it. personally, im sure there are easier things to do for the money. midpipe, cobb ap, lightweight rims, lightweight flywheel...