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R75/6 gas mileage

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srankin
Posts: 1054
Joined: Fri Jul 14, 2017 8:45 pm
Location: Spencerport, NY USA
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R75/6 gas mileage

Post by srankin »

OKAY fellows, I am writing my thoughts on gas mileage for the R75/6 bikes in the BMWMOA forum. I put my two cents in but I had to admit I was basing my mileage on my R75/7, my 78R100RS and 84 R80RT, not ever having owned an R75/6.

The original poster, had done a rebuild on his R75/6 and while the bike runs fine, he is only getting an average of 33mpg.

I am not looking for solutions, I think he is on the right track for that.

What I want to know is you people riding R75/6 bikes, do you believe mid 40's should be the average? What are you actually getting.

I am getting frustrated over there at the MOA because certain people have been chiming in with the mileage they get with their F bikes, oil heads and OM bikes and NOT the R90/6. So help me out, give me some numbers, thanks. St.
Owner of a 84, R80RT and 78, R100RS

weh8127
Posts: 199
Joined: Tue Jan 16, 2018 11:28 am
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Re: R75/6 gas mileage

Post by weh8127 »

I had my 1976 R 90/6 for 13 years and averaged 45mpg. My 1973 R75/5 is similar, but I haven't checked it in a while.
Bill Husted
Barre, MA USA
1963 R60/2 w/ 1955 Steib S500
1973 R75/5

cwf
Posts: 155
Joined: Sat May 15, 2021 5:52 am
Location: London, UK
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Re: R75/6 gas mileage

Post by cwf »

I ran a 60/6 for 100,000 miles and got 55mpg (UK gallons). I changed motor to a 75/6 because the magazines said it was a smoother engine and better fuel mileage but, over another 100K I got 45mpg and same on the next bike, a 75/7 (200K). US gallons are 20% smaller, so about 45 and 35mpg (US). Same in town and motorway (75/80mph). I think the UK people who got better fuel mileage were out of town and did 65/70mph.

Charlie.
75/7+ offroad sidecar; 50/2; R 35; XR125V; XR200A; Solex; 1939 Hillman Minx DHC.

Gumby
Posts: 3
Joined: Tue Nov 01, 2022 4:40 pm

Re: R75/6 gas mileage

Post by Gumby »

my 74 R90/6 gets around 50mpg...but this is riding back roads so the speed is usally under 60 :roll:

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