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Vilka bromsar passa bolt on....
Posted: 11 Aug 2010, 00:09
by henkz
Måste skaffa nya bromsar på min e34ixt och funderar på om det är bromsskivor från någon annan modell av bmw som passar bolton utan ombyggnation...?
Isåfall vilka och är dom bättre sämre än orginal ?
Posted: 11 Aug 2010, 08:54
by jeenz
Front Brakes
E34 540i, E32 735i-il, 740i-il, 750il, front brakes will fit the E34.
E32 front brakes are an upgrade for non M5/M540i, but the real front upgrades are the E31 and E34 M5. 324mm needs 16"wheels and 345mm fits under 17" wheels. Everything in the table will fit:
Bmw Model
Rotor size
Rotor part#
Caliper part#
L/R Clip part#
Carrier #
E32 730i (L6&V8) E34 525i-535i-530i V 302 x 22 34 11 1 160 936 34 11 1 160 367/368 34 11 1 157 687 34 11 1 160 366
E32 735i/il L6 E32 740i/il-750i/il E34 540i V 302 x 28 34 11 6 756 090 34 11 1 160 363/364 34 11 1 157 687 34 11 1 160 365
E34 M5 3.6 V 315 x 28 34 11 2 226 385 34 11 2 226 873/874 34 11 1 157 687 34 11 2 226 875
E31 840/850Csi** V 324 x 30 34 11 1 159 895 34 11 1 160 325/326 34 11 1 159 957 34 11 1 160 327
E31 840/850*** V 324 x 30 34 11 6 756 087 34 11 1 161 086 34 11 1 16 177/178 none 4 piston callipers
E38 750il V 334 x 32 34 11 6 757 756 does not fit does not fit does not fit
E34 M5 3.8 ('95) V 345 x 32 34 11 2 227 735/736 34 11 2 227 115/116 * 34 11 2 227 506 Requires 17" wheels
'*' 4 piston calipers, integral carrier V: ventilated
'**' 93-95 for the US 850Csi and up to 08/93 for other US models.
'***' 840 - 850 from 08/93 on
The larger Euro M5 brakes came standard on the Canadian model M540i. They weren't included on the U.S. 540i Sport model for litigious reasons, i.e. the aluminum floating rotor that requires periodic inspection for cracking. It was deemed US owners would ignore that service and end up maiming themselves and suing BMW. (Thanks David)
Rear Brakes (updated thanks to Gregory B. and Nick)
735il rear brakes will not fit the E34. E32 rear rotors will not fit the E34. However the 750i/il, 740i/il (and 540i) calipers and carriers can be bolted on the E34 when used with 540i rotors.
No E31 rear callipers fits the E34 but the 324x12 non vented rotor will fit. Everything in the table will fit:
Bmw Model
Rotor size
Rotor part#
Caliper part#
L/R Clip part#
Carrier #
E34 525-535-530 300 x 10 34 21 1 162 305 34 11 1 160 381/382 34 11 1 157 046 34 11 1 160 383
E34 540i V 300 x 20 34 21 1 159 659 34 21 1 160 399/400 34 21 1 157 046 34 11 1 160 384
E32 730i/il L6 & V8 300 x 10 34 21 1 165 259 does not fit 34 21 1 160 381/382 34 21 1 157 046 34 21 1 160 383
E32 735i/il & some L6 730i/il 300 x 12 34 21 1 165 257 not tested 34 21 1 160 353/354 not tested 34 21 1 157 046 34 21 1 160 355 not tested
E32 740i/il E32 750i/il from 1/90 V 300 x 20 34 21 1 162 967 does not fit 34 21 1 160 399/400 34 21 1 157 046 34 11 1 160 384
E32 750i/il to 1/90 V 300 x 20 34 21 1 162 967 does not fit 34 21 1 160 385/386 34 21 1 157 046 34 11 1 160 384
E34 M5 3.6 V 300 x 20 34 21 1 159 659 34 21 1 160 399/400 34 21 1 157 046 34 11 1 160 384
E34 M5 3.8 ('95) V 328 x 20 34 21 2 227 844 34 21 1 160 233 34 21 2 227 873/874 34 21 2 227 672 34 21 2 227 875
V: ventilated
E39 M5 brakes definitively do NOT fit the E34. Rob tried a set last summer, BMW moved the carrier mounting holes about 2mm further apart. The rotors also do not have the dual 18mm posts required to fit the E34 M5 hubs.
Cross drilled rotors are a waste of money, if you want to use your E34 on the track you can consider the ATE slotted rotors. If you want the ultimate in braking and have 17" wheels, consider upgrading to the Mov'it/Porsche kit. Check ultimate garage.
Brake balance: front/rear:
The type of brakes you install on your car has a large influence on how the car feels and handles, especially when driven hard. BMWs with semi-trailing-arm rear suspension tend to have some squat under acceleration and a certain amount of dive under hard braking.
For example, certain choices of front or rear brakes will increase the front brake bias over stock, which will obviously exacerbate the brake dive problemnot a good thing! Changing the bias will also affect the car's susceptibility to having the ABS kick in prematurely on the front or rear axle. Finally, it affects pedal travela lower-torque brake setup will require more pedal travel for the same amount of braking force compared to another setup. Even if you change the front and rear brakes simultaneously and maintain something close to the stock bias, if the new brakes are lower torque than the stock brakes you'll end up with more pedal travel. With some cars this can even mean having to change the master cylinder to a higher-volume unit.
To give an example, the E34 540i brakes develop 686 lb-ft of torque on the fronts at 500 psi line pressure; the rears produce 313 LB-ft, so the f:r bias is 69:31 (as a percentage). Adding the M5 front brake (rears are the same on US E34 M5's), which generates 720 LB-ft, changes the bias to 70:30. The '95 Euro M5 brakes generate 646 LB-ft front and 336 LB-ft rear, giving a bias of 66:34. Everyone raves about this setup, which is interesting as the front brakes actually generate LESS torque than the earlier E34 M5 (or the 540i, for that matter)! Chances are that this perception of awesome brakes has more to do with the better balance front-to-rear than the massive cooling capability, which only comes into play when you're driving the piss out of the car and the brakes are generating many kilowatts of heat. Unless you go to the track, you'll never encounter that aspect of their performance.
Here's where it gets interesting: the 850i single-piston front brake (like I have) generates 737 LB-ft, the highest of any BMW brake I know of. I assume you put the 540i rears (313 LB-ft) on your car, so the bias is 70:30, same as the US E34 M5. However, if you instead use the later 840i/850i (not CSi) brakes, which generate only 593 LB-ft of torque, the bias would be 65:35--very close to the Euro '95 M5 brakes. I believe, though haven't proven it yet, that this might be the ideal setup for the majority of E34 owners who don't want to spend the huge bucks for the '95 M5 brakes. It's still not cheap, but it's half the price of the alternative.
Posted: 11 Aug 2010, 08:55
by jeenz
Posted: 11 Aug 2010, 10:15
by Hansa
Jag fattade riktigt inte vad dom menade på den där sidan! men OM jag har fattat den rätt så ska iallafall M5 E34 Bromsar passa på min E34 525
Posted: 11 Aug 2010, 11:05
by jeenz
De ja posta om fram och bak bromsar är de som passar bult on
Posted: 11 Aug 2010, 12:26
by karlzzon
men undra inte henkz vad som passade till en ix? har inte dem andra bromsar än vad en vanlig e34 har?
Posted: 11 Aug 2010, 13:14
by henkz
karlzzon wrote:men undra inte henkz vad som passade till en ix? har inte dem andra bromsar än vad en vanlig e34 har?
exakt...
har hittat bromsskivor fram nya för pisspengar... dock så är dessa skivor större än vad ixens är... varför förstår jag inte då ixen troligen är tyngre än vanligt 525.....
Re: Vilka bromsar passa bolt on....
Posted: 29 Aug 2012, 15:26
by Pimplaren
Någon som vet om 850csi bakskivor passar på e34? samma mått..och frambromsarna passar på e34!