[falcon1411]

Hello everyone,

So i recently developed interest in reducing unsprung weight; new wheels and tires are in process.

Next step will be reducing weight on brakes.

Anyone know how much the stock M340i brake discs weigh? and if theres a lighter option? Or anything else i can slim down? pads?

Have M sport brakes.

Thanks.

[G30M]

i have something for you to develop an interest in

worry less about unsprung weight

focus on rotating mass

[G30M]

Originally Posted by falcon1411

Hello everyone,

So i recently developed interest in reducing unsprung weight; new wheels and tires are in process.

Next step will be reducing weight on brakes.

Anyone know how much the stock M340i brake discs weigh? and if theres a lighter option? Or anything else i can slim down? pads?

Have M sport brakes.

Thanks.

get smaller rotors and lighter pistons

buy forged 18" rims

trade in BMW for Honda

[HighlandPete]

Originally Posted by falcon1411

So i recently developed interest in reducing unsprung weight; new wheels and tires are in process.

...Anyone know how much the stock M340i brake discs weigh? and if theres a lighter option? Or anything else i can slim down? pads?

The OE 274x36 composite "lightweight" (alloy hat) disc, is listed at 14.812 kg on realOEM.

Lighter rims are the proven way to reduce unsprung weight.

[falcon1411]

Originally Posted by HighlandPete

The OE 274x36 composite "lightweight" (alloy hat) disc, is listed at 14.812 kg on realOEM.

Lighter rims are the proven way to reduce unsprung weight.

i think the brakes are 350mm or something

[HighlandPete]

Originally Posted by falcon1411

i think the brakes are 350mm or something

If you already have the smaller 348x36 composite disc listed on RealOEM at 12.63 kg, you can't do much better for weight.

Brembo list their 348x36 composite disc at 12.2 kg... I've just weighed one and it is 12.2 kg.

[peelerec]

Just curious why are you trying to reduce weight? Pushing for faster lap times?

[falcon1411]

Originally Posted by peelerec

Just curious why are you trying to reduce weight? Pushing for faster lap times?

never tried laps. not yet. maybe one day. just researching for now.

[peelerec]

Originally Posted by falcon1411

never tried laps. not yet. maybe one day. just researching for now.

I ask because this is typically not the car that people intentionally try to reduce weight. Obviously there are small things that can accomplish this such as a titanium exhaust but most aren’t willing to remove the “luxury” items standard on our vehicles.

[GA/\/\/\/\A_CT]

Originally Posted by g21

i have something for you to develop an interest in

worry less about unsprung weight

focus on rotating mass

Rotating mass is a myth. Unsprung weight is the real thing to focus on. Mass that has to change direction (not speed of direction) is there the best bang for buck is going to be.