1983(ish) R65LS Riders, can you help me out???

[tvrla]

It's true, the bikes with 19" snowflakes use the shallow brake disc, while the R65 snowflakes take the deep one. And if the two snowflakes (18", 19") are the same thickness at the hub, then no matter which one you go with, you'll need the deep disc discs.

I don't know what the difference is, so don't ask me! Doesn't make any sense, but that's just the way it is.

I might have an 18" snowflake I'd sell. Nice and straight, but don't recall condition of the paint.

[steve hawkins]

Interestingly enough when I put wire wheels on my 1982 R100, I had to use R65 deep carriers for the disks.  I was then able to use the existing R100 fork spacing with the brembo brakes......

The wheel was a 19 incher 2 rib hub from a R80 ST, so the hub was slimmer variety as fitted to the R65......Spacers required on the Brembos......

Note: This has nothing to do with pre 81 ATE sliding caliper stuff though.

[tvrla]

Steve - Thanks for posting that! Those are unusual discs - I've never seen the deep dish solid like that - no holes. Are they stock BMW parts?

[Milo_357]

It's true, the bikes with 19" snowflakes use the shallow brake disc, while the R65 snowflakes take the deep one. And if the two snowflakes (18", 19") are the same thickness at the hub, then no matter which one you go with, you'll need the deep disc discs.

I don't know what the difference is, so don't ask me! Doesn't make any sense, but that's just the way it is.

I might have an 18" snowflake I'd sell. Nice and straight, but don't recall condition of the paint.

Well, to show that I am fully vested in my "box of rocks" syndrome, I called the guy I bought the parts bike from to catch up with him (he'd been out of town), and told him the problems I was having.  His response?

"Did you check that extra 18" wheel that was in the parts boxs to see what the difference is?"

Que crickets...

Well, long story short, went home, tore apart garage, found said wheel, took off disc from 19" snowflake and held wheels side by side.

(No Bob, I haven't found my micrometer to measure yet!    I WILL have a chance tonight!  )

Just eyeballing the two, it is obvious the 18" (what DO you call the non-snowflake, aluminum wheels?) is wider at the hub.  Guessimating 3/4 or so.

I'm gonna mount that sucker with a michelin I have & see what happens...  

I'll report back. Gotta find an inner tube that will fit & hoping theres one in town someplace.

Dell

[tvrla]

Just eyeballing the two, it is obvious the 18" (what DO you call the non-snowflake, aluminum wheels?) is wider at the hub.  Guessimating 3/4 or so.

Not sure how to answer that - there's the 18 and 19 inch snowflakes, the LS wheels, and the wire wheels. Are you asking about the LS wheels (non snowflakes)?

It makes sense the LS wheels are wider than the snowflake since the LS takes the shallow discs where the snowflake takes the deep.

[steve hawkins]

The discs are not BMW items.  They are pfm cast iron discs.  

They were originally fitted to a set of shallow carriers when I had the standard snow flake on the bike.  

I had a set of Grimeca R65 discs that had warped on my R65 Cafe Racer, so I nicked those deep dish carriers for this setup.  

I have a single EBC disc on ther Cafe Racer now.....cos I am cheap....

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