Difference between front 318i/325i brakes?

[bumster22]

First post. Yes, I did the search. But, can't find the answer.

I just bought '85 318i with 220k mi. for daily driving. I would like to upgrade the front brake to 325i vented unit.

For those that have taken this path before. Please share your wisdom.

What do I need? Would be nice if I can use some brake parts from my 318i for the conversion. But, I don't know the difference between 318i/325i brake. Other than one is vented:(

Thank you in advance for your help.

Bumster

[calypso]

My 318i has ventilated dics on the front.

[bumster22]

'90-91 318i is vented

Calypso.

I do know that later 318i came with 325i brakes. My is solid disc.

I was hoping that the dia. of the disc is the same. What I'm not sure of is the thickness of vented disc might not work with my 318i caliper.

Thanks,

[Rob]

I'm think you can bolt later 325i calipers and vented rotors onto the early (small) strut housings. If not, its not a big or expensive proposal to upgrade the entire strut assembly, which will give you the bigger brakes as well as open more avenue for suspension choices.

[boom-monkey]

I've got the front calipers as well as the rear trailing arms from a 325 so you could also swap to rear disks. PM me if you'd like to buy these off me. Peace.

[rs4pro3]

You need, 325i/e rotors and calipers. They bolt right up no modification required. :D

[BimmerToad]

I have a set of complete front suspension assemblies w/ brakes if you're interested.

[bumster22]

Thank you for all your inputs.

Gentlemen,

Thank you for all your inputs. I might just drive it the way it is.

The reason why I want to upgrade the brakes and suspension. I got an extra M50 w/ 117k mi. that taken my garage space.

Thanks again,

Bumster