BMW · Roadster

BMW G 310 R specifications, dimensions and price

BMW · Roadster

BMW’s G 310 R uses a 313cc single and six-speed gearbox with chain final drive. The 30.9-inch unladen seat is 1.9 inches below the G 310 GS’s; its 362 lb road-ready weight is 24 lb lower. Both comparisons concern the stated standard configurations, not accessory seats or lowering kits.

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BMW G 310 R

BMW G 310 R
Specification	Value
Model year	2025
Class	Roadster
Engine	Water-cooled, single-cylinder 4-stroke engine, four valves, two overhead camshafts and wet sump lubrication
Displacement	313cc
Bore x stroke	80x60.96 mm
Compression ratio	10.9:1
Fuel system	Electronic fuel injection
Transmission	Constant mesh 6-speed gearbox
Final drive	X-ring chain with shock absorption in the real wheel hub
Front suspension	Inverted fork, 1.6 in
Front suspension travel	5.5 in
Rear suspension	Cast aluminum dual swing arm, central spring strut, spring pre-load adjustable
Rear suspension travel	5.2 in
Front brake	Single disc, diameter 11.8 in, 4-piston fixed caliper, radially bolted
Rear brake	Single disc, diameter 9.5 in, single-piston floating caliper
Front tire	110/70 R17
Rear tire	150/60 R17
Seat height	30.9 in (unladen)
Wet weight (road ready, fully fueled)	362 lb
Wheelbase	54.3 in
Trail	4.5 in (castor)
Fuel capacity	2.9 gal
Rated output	34 hp
Rated output (at rpm)	9,250 rpm
Maximum torque	20.6 lb-ft
Maximum torque (at rpm)	7,500 rpm
Maximum speed	88 mph
Steering head angle	64.9°
ABS	BMW Motorrad ABS
Clutch	Multi-disc oil bath (anti-hopping) with self-reinforcement
Frame	Tubular space frame
Wheels	Cast aluminum
Permitted total weight	760 lb.
Payload	399 lb.
Starting MSRP	$5,195
Destination charge	$595

Total Motorcycle says the unconventional single has a special design in which the cylinder head is rotated 180 degrees compared with conventional engines, pushing the bike's center of gravity toward the front wheel, that ride-by-wire makes throttle response more effortless and precise, and that the slipper clutch and optimized engine make it an intuitive, agile ride whether going to work, an appointment or out of the city.

MOTORESS says the bike is well balanced with surprisingly good ride quality for its price and size, and that riders will love taking a friend on the G 310 R because the feisty single has a maximum load of 186.5 kg.

What the engine layout means

Turning the head around puts the intake at the front and the exhaust at the back, which shortens the bike and shifts weight forward. The listed suspension and tire sizes describe the G 310 R’s chassis; engine displacement alone does not establish cornering behavior. A slipper clutch protects the rear wheel on hard downshifts, which helps a newer rider.

Against the G 310 GS and CB300R

The G 310 R costs $700 less than the GS, with a seat 1.9 in lower and a weight 24 lb lower (362 lb against 386 lb). Honda's CB300R and KTM's 390 Duke are the roadster rivals.

How it compares with the other small roadsters

Honda lists the CB300R at $4,499 and 316 lb curb. So the BMW is $696 dearer and, on a road-ready basis, about 46 lb heavier, though the two weights are stated differently.

That premium buys the reversed-head engine, ride-by-wire and BMW's dealer network, and a rider deciding between them should test-ride both because the small differences in seat height (30.9 in against the Honda's 31.6 in) and weight are what decide whether a bike feels light in a car park.

The G 310 R suits a newer rider who wants a light, cheap, well-finished roadster for commuting. It is not fast on a highway.

Because the engine head is turned around, ask a dealer to explain the layout and the service points. Check the tires and the chain, and check clutch operation against the model’s service schedule. A small roadster is often ridden by new riders, so look for tip-over marks on the levers and the bar ends.

Ask what the warranty covers and whether the bike has had software updates. Compare the price with Honda's CB300R and KTM's 390 Duke.

G 310 R against the CB300R and 390 Duke

BMW G 310 R — specification reference

The G 310 R is BMW's small roadster, built around a 313cc single with its cylinder head turned 180 degrees. MOTORESS says the ride quality is surprisingly good for its size and price, and BMW asks $5,195.

Turning the head around puts the intake at the front and the exhaust at the back, which shortens the bike and shifts weight forward. That is why a small single can feel planted in a corner. A slipper clutch protects the rear wheel on hard downshifts, which helps a newer rider.

Model-year range: 2021–2023
Compared editions: 3
Specification entries: 39
Entries that differ: 3

Total Motorcycle says the cylinder head is rotated 180 degrees compared with a conventional design, which pushes the center of gravity toward the front wheel.

MOTORESS says it has a maximum weight load of 186.5 kg. So a friend can ride along, though it is a small bike.