M4 Comp...

[RSsteveH]

I've just disposed of my N55 M2 and bought a 19 plate M4 Comp (F82), which I pick up soon.

I've seen some of these cars with 20" rears and 19" fronts. I like the aesthetic quality of such a modification. Is this just a straight swap, the 19's for the 20's, or is there more work that needs to be done? My M4 does have a splitter on the front, so evil speed bumps are probbaly out of the equation. Is there anything neegative to putting on the 19s?

[LowTread]

Loving the idea of "disposing" of an M2. Very PH

[RSsteveH]

LowTread said:

Loving the idea of "disposing" of an M2. Very PH

Yeah was a bit brash. I loved that car. But got a good PX so it's all good.

[WilsonWilson]

Genuine BMW 666M wheels are 20″ so don't see how going down to 19" at the front would be an issue. They are 9.0 J X 20 EH2 and IS 29 (OFFSET)

[RSsteveH]

WilsonWilson said:

Genuine BMW 666M wheels are 20? so don't see how going down to 19" at the front would be an issue. They are 9.0 J X 20 EH2 and IS 29 (OFFSET)

Thanks for your reponse. Yes the M4 is coming from a BMW dealer so the 20" wheels are genuine BMs. I just think the 19s on the front will be a subtle but effective change.

[as7920]

Interestingly the M4 GTS acid orange 666M were 19” front and 20” rear.

[cerb4.5lee]

as7920 said:

Interestingly the M4 GTS acid orange 666M were 19” front and 20” rear.

I think the current M3/M4 are 19" front and 20" rear as well. I didn't realise that the M4 GTS was though until you said.

[RSsteveH]

cerb4.5lee said:

I think the current M3/M4 are 19" front and 20" rear as well. I didn't realise that the M4 GTS was though until you said.

I think the 2018/19 M4 CS has 19" fronts and 20" rears as well. This was where I got the idea from.

[cjs 28]

I have a m4 cs with the staggered wheels ,
If you go to Hereford bmw I think they have original cs wheels with tyres for £3500 .

[cerb4.5lee]

RSsteveH said:

cerb4.5lee said:

I think the current M3/M4 are 19" front and 20" rear as well. I didn't realise that the M4 GTS was though until you said.

I think the 2018/19 M4 CS has 19" fronts and 20" rears as well. This was where I got the idea from.

I keep learning for sure. I do have a serious soft spot for the M4 CS too. They look awesome I reckon.

[RSsteveH]

cjs 28 said:

I have a m4 cs with the staggered wheels ,
If you go to Hereford bmw I think they have original cs wheels with tyres for £3500 .

Whoah, good info this. Although Hereford is a bit far. I'm in the south east but will shop around. Will there be that much difference through the dealers, do you think?

[RSsteveH]

cerb4.5lee said:

I keep learning for sure. I do have a serious soft spot for the M4 CS too. They look awesome I reckon.

Yeah, bit of carbon does wonders and that extra little bit of rake illusion with 19s on the front, makes all the difference I think.

[ladderino]

RSsteveH said:

Whoah, good info this. Although Hereford is a bit far. I'm in the south east but will shop around. Will there be that much difference through the dealers, do you think?

Cotswold and Harry Fairburn do quotes on other forums, generally with a bit of a discount.

[breadvan]

as7920 said:

Interestingly the M4 GTS acid orange 666M were 19” front and 20” rear.

True and it's a nightmare.

The 19" wheel only just clears the back of the ccb caliper so it's dead easy to pick up stones. Here's the inside of my rim -



It's very common and although easily fixed, I wouldn't recommend 19s.

[Terminator X]

breadvan said:

as7920 said:

Interestingly the M4 GTS acid orange 666M were 19” front and 20” rear.

True and it's a nightmare.

The 19" wheel only just clears the back of the ccb caliper so it's dead easy to pick up stones. Here's the inside of my rim -



It's very common and although easily fixed, I wouldn't recommend 19s.

My fronts are scored the same, M3cs.

TX.

[RSsteveH]

breadvan said:

True and it's a nightmare.

The 19" wheel only just clears the back of the ccb caliper so it's dead easy to pick up stones. Here's the inside of my rim -



It's very common and although easily fixed, I wouldn't recommend 19s.

So, have you, or will you, put 20s all round? Bit dissapointing this. I wanted to get that extra stance. But if it causes damage, then no.

[liner33]

cerb4.5lee said:

I think the current M3/M4 are 19" front and 20" rear as well. I didn't realise that the M4 GTS was though until you said.

Yep can confirm , apparently its to help with turn in

The M4 CSL comes with 20/21"

[breadvan]

RSsteveH said:

breadvan said:

True and it's a nightmare.

The 19" wheel only just clears the back of the ccb caliper so it's dead easy to pick up stones. Here's the inside of my rim -



It's very common and although easily fixed, I wouldn't recommend 19s.

So, have you, or will you, put 20s all round? Bit dissapointing this. I wanted to get that extra stance. But if it causes damage, then no.

I haven't because I want to keep the original but I did consider it. I can't remember if the std caliper is the same size as the ccb one, perhaps there's better clearance with steel brakes?

[RSsteveH]

breadvan said:

I haven't because I want to keep the original but I did consider it. I can't remember if the std caliper is the same size as the ccb one, perhaps there's better clearance with steel brakes?

I'm going to try to find out. It would make sense that the ccb caliper is bigger than standard, wouldn't it?

[as7920]

liner33 said:

Yep can confirm , apparently its to help with turn in

The M4 CSL comes with 20/21"

M4 CSL comes with 19"/20" 827M style, considering replacing my 826M with them. They also look to be the wheel for the new incoming M3 (and M4?) CS.

The 1000M M Performance wheels are 20"/21".