[fC8]

Hey guys,

I am a new comer here! I'll be getting my new 528i in 2 weeks, and I am thinking to get the BMW OEM 312 rims. I worry if these 20" rims will be too big and heavy for my 528i, consider my car has only 258hp.

Anyone here is using 312 rims on a 528i? Do they significantly slow down the acceleration? Will these 20" rim affect its comfort alot?

Pls give me some advise, thx!

[BMMW]

Originally Posted by fC8

Hey guys,

I am a new comer here! I'll be getting my new 528i in 2 weeks, and I am thinking to get the BMW OEM 312 rims. I worry if these 20" rims will be too big and heavy for my 528i, consider my car has only 258hp.

Anyone here is using 312 rims on a 528i? Do they significantly slow down the acceleration? Will these 20" rim affect its comfort alot?

Pls give me some advise, thx!

Yes , it is too heavy and too big.
It will make yr 528I --- suspension , brake and the tranmission demage faster.
And the torque will be reduced.
I have tried to change my 528i rim to 356 20".
But after 1 week, I changed it back to the original 17'
Don't do that , I can sure you will regret as me.

[EL MEJOR]

Originally Posted by BMMW

Yes , it is too heavy and too big.
It will make yr 528I --- suspension , brake and the tranmission demage faster.
And the torque will be reduced.
I have tried to change my 528i rim to 356 20".
But after 1 week, I changed it back to the original 17'
Don't do that , I can sure you will regret as me.

why would you regret it?

[BMMW]

Originally Posted by EL MEJOR

why would you regret it?

Torque is much less.
Brake is much difficult.
The performance is reduced.
Other minor problem is Noisy and more pumpy.
I can feel that if use that 356 rim longer time. The brake , tramission and the suspension will be more faster be demaged than the 17"OEM .

[linhperfume]

for me it's very nice

[RC3]

Originally Posted by linhperfume

for me it's very nice

Nice car and rims. You car must cost a fortune in Vietnam.

[Robin_NL]

Originally Posted by BMMW

Yes , it is too heavy and too big.
It will make yr 528I --- suspension , brake and the tranmission demage faster.
And the torque will be reduced.
I have tried to change my 528i rim to 356 20".
But after 1 week, I changed it back to the original 17'
Don't do that , I can sure you will regret as me.

3 weeks ago I changed my 19" style 331 wheels & RFTs (GoodYear Excellence) for the 20" style 312 wheels in ferric gray and NON RFT Bridgestone RE050A.

None of the above occured. Better roadholding/crisper steering , the same comfort and it actually feels a tad faster in accelleration, due to the less weight of the non RFT tyres I guess. Maybe the 356 wheel weighs more than the 312 wheel?

[pyramid]

OEM 17" (sytle 237) + Pirelli RFT = 26.08kg each.
OEM 20" (312) + Conti DW = 26.1kg Front, 26.76kg Rear.
OEM 19" (style 351m) + Michelin PSS = 26.04kg Front, 26.44kg Rear

It shouldn't really change anything coming from stock 17" with RFT to 19"/20" OEM wheels. My assumption only based on above numbers, I haven't got a change to try, eventhough I have them all.

[linhperfume]

My car is $140.000 US in my country

[RC3]

Originally Posted by linhperfume

My car is $140.000 US in my country

I figured that. You can get a F10 M5 and a 1M with some spare change.

[remmib]

Originally Posted by fC8

Hey guys,

I am a new comer here! I'll be getting my new 528i in 2 weeks, and I am thinking to get the BMW OEM 312 rims. I worry if these 20" rims will be too big and heavy for my 528i, consider my car has only 258hp.

Anyone here is using 312 rims on a 528i? Do they significantly slow down the acceleration? Will these 20" rim affect its comfort alot?

Pls give me some advise, thx!

I'd say not a problem at all. I only got 163hp in my 320d with 20".

[redzuanhassan]

Guys, do you have any idea if they going to offer the 312 wheel in smaller size, say in 19'' or 18'' anytime in the future?? Or I need to find the in aftermarket?

[EdM5]

Originally Posted by pyramid

OEM 17" (sytle 237) + Pirelli RFT = 26.08kg each.
OEM 20" (312) + Conti DW = 26.1kg Front, 26.76kg Rear.
OEM 19" (style 351m) + Michelin PSS = 26.04kg Front, 26.44kg Rear

It shouldn't really change anything coming from stock 17" with RFT to 19"/20" OEM wheels. My assumption only based on above numbers, I haven't got a change to try, eventhough I have them all.

Great info Pyramid, thank you very much!

Do you happen to know what's the weight of an OEM 356? I cannot find that information.

[EL MEJOR]

Originally Posted by linhperfume

My car is $140.000 US in my country

HOLY SH*T! are you serious? Damn you must be rich, i mean, very rich then to pay 2x a value of a car. Damn you should take your money and run to the US, would buy you a lot more

[linhperfume]

For me 20" is perfect. I've lowered my car with h

[fC8]

Thx for all the advises!

I suppose the performance and comfort should be going down after putting on the 20" rims, but just wondering if it affects too much. If it is only a minor issues, then I guess I will get them, coz I really like the rims, especially seeing the photos you put up here.

[BMMW]

Originally Posted by pyramid

OEM 17" (sytle 237) + Pirelli RFT = 26.08kg each.
OEM 20" (312) + Conti DW = 26.1kg Front, 26.76kg Rear.
OEM 19" (style 351m) + Michelin PSS = 26.04kg Front, 26.44kg Rear

It shouldn't really change anything coming from stock 17" with RFT to 19"/20" OEM wheels. My assumption only based on above numbers, I haven't got a change to try, eventhough I have them all.

Although with the similar weight,
if the weight is more close to the centre of the wheel (17"), it is more easy to start and stop to spin. (It is very simple physic knowledge)
So if the weight is more away from the center , it will more difficult to star and stop. 20" is wider and 3" more from the center, it will make much more different.

[Robin_NL]

Originally Posted by BMMW

Although with the similar weight,
if the weight is more close to the centre of the wheel (17"), it is more easy to start and stop to spin. (It is very simple physic knowledge)
So if the weight is more away from the center , it will more difficult to star and stop. 20" is wider and 3" more from the center, it will make much more different.

I understand and will agree, but a tyre also weighs something (a lot sometimes!) which is also more away from the centre. So please explain that. RFT's weigh more than non RFTs we already know.

I have Dunlop Wintersport 17"RFT wintertyres and the difference with the ex 331 19"wheels is actually nothing irl. I think my 20"non rft's will eventually give a better and faster ride tbh....

[linhperfume]

More road noise, but it's ok. Feel sportier, b4 the steering was so loose

[pyramid]

Originally Posted by Robin Hood

I understand and will agree, but a tyre also weighs something (a lot sometimes!) which is also more away from the centre. So please explain that. RFT's weigh more than non RFTs we already know.

I have Dunlop Wintersport 17"RFT wintertyres and the difference with the ex 331 19"wheels is actually nothing irl. I think my 20"non rft's will eventually give a better and faster ride tbh....

+1....

But I think what BMMW meant is, wider wheel and tire will need more power to move them because it grip the road more (which is the positive effects, in return).

[pyramid]

Originally Posted by fC8

Thx for all the advises!

I suppose the performance and comfort should be going down after putting on the 20" rims, but just wondering if it affects too much. If it is only a minor issues, then I guess I will get them, coz I really like the rims, especially seeing the photos you put up here.

I was in the exact same position of you now. 312 in ferric grey on AW F10 = hard to refuse. That's why I now end up with another set of oem wheels (19"). But oh boy... running 20" + lower springs = win!!!

My opinion,
From 19" to 20" with the width, same brand of tires, and "correct" pressure, I would say at least 10% firmer. This is due to 5% different in tire profiles (40 vs 35) + "maybe" 5% from sidewall stiffness/flex.

And don't forget, if you go 20", you will want to lower your car. That would further reduce the comfort. All in all, you should be looking at least 20% harsher ride.

[pyramid]

Originally Posted by EdwinF10

Great info Pyramid, thank you very much!

Do you happen to know what's the weight of an OEM 356? I cannot find that information.

15.6 kg each

All info can be found here,
http://113.128.178.221:3387/test/pli...6&page=36_1468