Quote:
Originally Posted by jeremyc74
I don't think it's very likely the wheels and tires will be lighter, considering that they're getting larger and wider (by a considerable amount it seems). The factory specs don't generally allow them to cut down on strength to save weight like some of the aftermarket companies do. I'll be surprised if they're able to keep them the same weight, but I'm actually expecting they'll be a little heavier.
Also, the brakes are getting larger, and that adds weight pretty quickly. If the N55 is really 40lbs lighter than the N54, my guess is that combined with a few other lighter components will probably make this a "break even" when compared to the 135i.
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The wheels should be forged. You can get larger and wider with forged wheels and they will still be lighter than the cast ones on the 135i.
To give you an idea, on my stock 335i's (both) the 18" wheels weighed about 30-32 lbs (front and rears).
When I bought Morr Alloy Forged wheels, I went up to 19" and went an inch wider. Those forged wheels were 11 lbs LIGHTER than the stock 335i wheels.
Forged are lighter and stronger. And the tires should be lighter too. 135i has heavy RFT tires, I'd think the M1 will go with Michelin Pilot Sports or Continental ContiSport DW's or 3's. All three are lighter than the 18" RFT's
The brakes will probably be 1/2-1 inch bigger, but they are drilled.
So I'd think they would be a wash, but sometimes, the BBK's in the aftermarket are lighter than the stock OEM smaller ones.
But either way, you agree with me, I think it will be a wash on the weight.
Probably, as I guessed in earlier post, within 50 lbs of the 135i's weight.