What is the correct gear to speed ratio? - BMW G310 R/GS Forum
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post #1 of 37 (permalink) Old 10-22-2018, 06:05 AM Thread Starter
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What is the correct gear to speed ratio?

Hi Guys,
I am experiencing a lot of vibrations on my g310r, but some people replied saying the gear to speed ratio might not be proper. It is usually after 70KPH, the vibrations start creeping in. I use the engine sound as the reference to switch gears.

1-15 1st gear
15- 35 2nd gear
35-55 3rd gear
55-75 4th gear
75 - 85 5th gear
85- above 6th gear

What about you guys? Let me know whether I am doing something wrong here or I need to take the bike to the service center.

Regards,
Ankur Vashishtha
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post #2 of 37 (permalink) Old 10-22-2018, 01:08 PM
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I think you are pushing a little too much. I don't think there is a specific "rule" for gear x speed ratio but if you are cruising at 75 mph in 4th you are probably above 9k rpm and for sure the bike will vibrate a lot.

When I am on the freeway just cruising at constant speed above 60mph I will be in 6th gear. If you need to overtake someone, downshift to 5th and the go back to 6th.
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post #3 of 37 (permalink) Old 10-22-2018, 01:11 PM
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^^^ Totally agree...
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post #4 of 37 (permalink) Old 10-22-2018, 02:06 PM
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Quote:
Originally Posted by gregtixa View Post
I think you are pushing a little too much. I don't think there is a specific "rule" for gear x speed ratio but if you are cruising at 75 mph in 4th you are probably above 9k rpm and for sure the bike will vibrate a lot.

When I am on the freeway just cruising at constant speed above 60mph I will be in 6th gear. If you need to overtake someone, downshift to 5th and the go back to 6th.

OP was quoting in km/h , so seems about right to me. (Perhaps a little low)

Ed
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post #5 of 37 (permalink) Old 10-22-2018, 03:04 PM
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GearingCommander has stats for the g310 series bikes now:

https://www.gearingcommander.com

Bike seems happiest at 5500-6500 RPM.
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post #6 of 37 (permalink) Old 10-22-2018, 05:22 PM
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Originally Posted by Eddie View Post
OP was quoting in km/h , so seems about right to me. (Perhaps a little low)

Ed
HAHAHA you are right. Maybe he is shifting too early?
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Greg

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post #7 of 37 (permalink) Old 10-22-2018, 07:38 PM
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Personally, I find the vibration in the hands is worse when the revs are kept low. I prefer to have the revs a bit higher, not to the red line, but higher than lower.

Don't ask me specifics like RPM vs speed values, it's just the way I feel the bike. I started on 2 stoke Yamaha RD's and small euro cars so I was never scared of revs.

It's the old small and fast motor vs big and slow american iron.

You got to use it as it was designed. And let's not forget our motors are 1/4 of a 1000RR (we even share it's spark plug!) and they weren't designed to go slow!
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post #8 of 37 (permalink) Old 10-22-2018, 07:45 PM
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You can experiment with different bar ends to move the vibrations up or down the revs.
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post #9 of 37 (permalink) Old 10-22-2018, 08:51 PM
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It all depends on the load engine is under. Sitting in 4th gear at 50kms per hour is fine, but starts to lug if going uphill. I don't feel much vibrations around town, but then I wear proper riding gloves and boots always. May be riding without gloves gives a different feel.

2018 G310GS - white
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post #10 of 37 (permalink) Old 10-22-2018, 09:26 PM
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Originally Posted by KiwiJeeper View Post
May be riding without gloves gives a different feel.
Especially when sliding on asphalt!
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