I have an F80 now...
I think in this particular vehicle it is partially due to the dct, it provides quite a bit of engine braking. My 335 said 80k miles for brakes ... then again these are bigger and the car is slightly lighter
I have an F80 now...
That engine braking might well be regen, bro. I thought I read that all BMW's got regen starting with F30.
There is a small motor integrated in the hubs that charges the battery once you hit the brakes, but it is no where near actual “regen braking”. This car has shitty non linear braking thanks to the dct. My F30 did not. The 8 speed is far smoother
That's saving your brake pads considerably,
It's brilliant, IMO. Think about how much energy is wasted in braking. From what I understand, during braking, BMW's "disconnect" the alternator so there's zero drag on the engine (improving efficiency) and uses the power coming from the "brakes" to charge the battery instead. It's a little thing, but pretty clever. Saves wear and tear on brake components and is more efficient. Adds complexity, but how much.
Yep the Mazda’s have a similar system. And I think it’s coming to FCA cars with the alternator being a motor generator unit.Detroit wrote: ↑Tue Jun 05, 2018 11:40 amIt's brilliant, IMO. Think about how much energy is wasted in braking. From what I understand, during braking, BMW's "disconnect" the alternator so there's zero drag on the engine (improving efficiency) and uses the power coming from the "brakes" to charge the battery instead. It's a little thing, but pretty clever. Saves wear and tear on brake components and is more efficient. Adds complexity, but how much.
I notice the impacts of regen driving the Volt. It's amazing how long the range can go in stop and go traffic. Put it in heavy regen mode, and you can drive in traffic without taking your foot off the go-pedal. When I need to press the brake, I sometimes will take a look at the power meter and notice the regen CRANKED. The wheels on the Volt look brand new and I've never even washed them. The vast majority of braking is regen and you can't even tell, and applying that to gas powered cars like BMW has is pretty clever.
The FCA alternator one is really interesting. Effectively a belt-driven electric motor that just assists the engine on take-off. execution for a super mild hybrid.Johnny_P wrote: ↑Tue Jun 05, 2018 12:15 pmYep the Mazda’s have a similar system. And I think it’s coming to FCA cars with the alternator being a motor generator unit.Detroit wrote: ↑Tue Jun 05, 2018 11:40 am
It's brilliant, IMO. Think about how much energy is wasted in braking. From what I understand, during braking, BMW's "disconnect" the alternator so there's zero drag on the engine (improving efficiency) and uses the power coming from the "brakes" to charge the battery instead. It's a little thing, but pretty clever. Saves wear and tear on brake components and is more efficient. Adds complexity, but how much.
I notice the impacts of regen driving the Volt. It's amazing how long the range can go in stop and go traffic. Put it in heavy regen mode, and you can drive in traffic without taking your foot off the go-pedal. When I need to press the brake, I sometimes will take a look at the power meter and notice the regen CRANKED. The wheels on the Volt look brand new and I've never even washed them. The vast majority of braking is regen and you can't even tell, and applying that to gas powered cars like BMW has is pretty clever.
Regen or KERS is fantastic tech.
Cost breh... too expensive to engineer into a vehicle with a $500-1500 profit margin.
Right, when you volume seller is the size of a children's playground on wheels if you can eke out 1 MPG better your CAFE stress will be eased quite a bit.
The odd part to me is that both are almost identically worn. I actually thought of rotating them side to side since I saw the exterior wear and figured it was me driving it like a douche, but then once I got them fully turned I noticed the inside wear as well.troyguitar wrote: ↑Tue Jun 05, 2018 10:33 pm Could be toe wear on the inside and normal wear from hard cornering on the outside. Hard to say without measuring it. That being said, cranking them up to 36 psi will slow that wear down in the meantime.
Yea... I'll be getting at least a check in the next 2000 miles. My oil change is due in about 2 months, so I'll have em check alignment and rape me for a set of tires. I think I am not going used this time since these look like they last ~20k miles... which is exactly how long i'll have the car for before lease turn in.troyguitar wrote: ↑Tue Jun 05, 2018 10:33 pm Could be toe wear on the inside and normal wear from hard cornering on the outside. Hard to say without measuring it. That being said, cranking them up to 36 psi will slow that wear down in the meantime.
quoting myself to bring it up to the top... looks like costco is running a tire sale ~1200 for a set of 4 installed after tax. Gotta figure out if I'l go with PSS or PS4 or whatever that new one is...max225 wrote: ↑Tue Jun 05, 2018 10:24 pm
Front left
Front right
Alignment gurus could you please chime in, it looks like my car is wearing both inside and outside edges.
One would think that means the tire pressure is too low but it is correct 31psi vs 32 required.
Car tracks 100%. Straight... I don’t want to get a BS excuse from a tire shop or a swindle from the for a $299 alignment.
Any insights as to what type of adjustment the car would need ? Or is this “normal”
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Re: Bolded part....max225 wrote: ↑Tue Jun 05, 2018 11:49 pm So this is an interesting piece. I was crawling around to see if my car was "lowered", (doesn't seem that way) However check this out!
It looks like the middle 2 of the 4 exhaust pipes are "muffled" while the exterior two are straight through.... when in sport mode the car gets pretty damn loud. I can't believe BMW essentially installed a factory muffler bypass!
This car literally needs no mods. bmw took care of everything
Dat chebby exec pace car crash doe.