20 LBs is quite a difference but I don't think it will be too dramatic but it will be noticable.spubar said:Well Im going from 205/55/16 to 235/35/19. The diameter is supposed to be almost the same but my new rims and tires weight 50lbs and my old rims and tires weight about 30 lbs. How bad will I be affected?
I think you mean rotational mass (unless they are the same thing :dunno: But yes I've heard the same thing.VicM5 said:I read somewhere that for each pound of unsprung weight that increases - its equal to 10 pounds of sprung weight. So if your wheels are changing 20 lbs all the way around its like carrying 800 extra pounds (200 on each corner) in your car or trunk. This is just what I have heard.
From personal experience, I had Brabus 19's on my E55 and they weighed in at 33 lbs- I then dropped them and got BBS LM's at about 25 lbs. This 8 lb per wheel difference was definitely felt, especially during launches. IMO 20 lbs of unsprung weight at each corner is huge!!!