By NastyNils·
Motorcycle comparison · Cruiser
BMW R 12 (MY2024) vs R 18 (MY2020)
BMW R 12 vs R 18: buy with your heart, but read this first.
Down low in a tall gear, the BMW R 12's boxer builds its push calmly and doesn't snap at you. The BMW R 18 pulls with bare cylinders between your knees.
So which one do you buy?
The R 12 has the edge if…
Sporty riding on twisty roads
Nose ahead: R 12
The R 12 is a touch more fun when the road starts bending. The difference is stronger brakes and harder acceleration.
The R 18 has the edge if…
Character, looks and sound
Narrow edge: R 18
Parked side by side, the R 18 draws the eye a little more. The reason: more chopper style and more retro style. Only a little, and taste can flip it.
Keeping running costs low
Inches ahead: R 18
Over a year of riding, the R 18 noses ahead on running costs. A neglected example would wipe that out.
Which one's the smarter buy
Money won't decide it
The R 12 costs less, but that gap doesn't make it the better buy. Neither bike is the clear value pick for your money.
What makes each one tick
R 12
On Iron Mountain Road, the R 12 holds its line through each bend and has you looking for the next one. Its wide bar never tires your arms, and the engine doesn't grate through a week of rain, cold and rough mountain roads. It's never a chore. On slick, broken pavement, the lever hauls it down clean.
Nils rode the R 12 in Montenegro in 2024 (NastyNils Testride).
R 18
At parking-lot speeds, the R 18's 761 lb (345 kg) calls for a deliberate touch on every control. Clutch and front brake both require a deliberate grip, but grab a handful and the bike stops straight and planted. Once it's rolling, the low-slung mass lets it ease into a bend, and the firm chassis eggs on a sporty pace through flowing curves. Sharp bumps slam through the seat. There's a bass thrum under every mile.
Nils rode the R 18 in Austria and Germany in 2020 (NastyNils Testride).
The Voice of Experience
What actually separates them
- The R 18 has the lower seat: 27.2 in (690 mm) vs 29.7 in (754 mm).
- The R 12 has the lower wet weight: 500 lb (227 kg) vs 761 lb (345 kg).
- The R 18 makes more peak torque: 117 lb-ft (158 Nm) vs 81 lb-ft (110 Nm).
Which one for the way you ride
Daily commuting & city riding
Not built for it: R 18
Weekday traffic isn't the R 18's world, so it isn't rated here.
Comfortable long-distance riding
Both fall short
Long days aren't what these two do best. Plan shorter legs and plenty of stops.
Who each one is built for
What's good, and what you'll live with
R 12
Strengths
- Boxer Torque, Zero Drama
- Clean Throttle In Any Weather
- Surprising Composure In The Hills
- Brakes Hold On Wet, Broken Roads
- Authentic boxer character
Trade-offs
- Footpegs Drag When You Push
- Firm Suspension Beats You Up
- Quickshifter Gets Harsh Up High
R 18
From Nils' own saddle time
Strengths
- The motor is the scenery
- Hides its weight in corners
- Brakes stop it straight
- A canvas, not a finished bike
- Rewards a second look
Trade-offs
- Power is competitive, not commanding
- Almost nothing to tune
- Traction control is a checkbox
- The seating layout is a gamble
Known problems to check before you buy
R 12
No confirmed faults on file yet. That's not the same as fault-free.
R 18
- Reverse gear seal failure (recall, NHTSA Recall 24V-716) Recall 24V716000 The optional reverse gear seal can degrade in hot/humid conditions, allowing moisture ingress that may lead to overheating and fire risk.
What they cost used
These prices compare a 2-year-old R 12 with a 2-year-old R 18.
- R 12
- about $11,000
- R 18
- about $12,100
At two years old, the BMW R 12 sits around $11,000 while the BMW R 18 runs about $12,100. That's a $1,100 gap in the R 12's favor. These are US market estimates, not live listings.
What they share
- Engine
- Flat-twin (boxer)
- Cooling
- Air/oil-cooled
- Gearbox
- 6-speed
- Final drive
- Shaft
Where the spec sheets split
| R 12 | R 18 | |
|---|---|---|
| Seat height | 29.7 in (754 mm) | 27.2 in (690 mm) |
| Wet weight | 500 lb (227 kg) | 761 lb (345 kg) |
| R 12 | R 18 | |
|---|---|---|
| Displacement | 1170 cc | 1802 cc |
| Power | 95 hp (70 kW) | 91 hp (67 kW) |
| Peak power at | 6,500 rpm | 4,750 rpm |
| Torque | 81 lb-ft (110 Nm) | 117 lb-ft (158 Nm) |
| Peak torque at | 6,000 rpm | 3,000 rpm |
| R 12 | R 18 | |
|---|---|---|
| Fuel capacity | 3.7 US gal (14 L) | 4.2 US gal (16 L) |
| R 12 | R 18 | |
|---|---|---|
| Fork | Upside-down (USD) | Telescopic |
| Front brake | 310 mm | 300 mm |
| Front tire | 100/90-19 | 120/70-19 |
| Rear tire | 150/80-16 | 180/65-16 |
| Wheelbase | 59.8 in (1519 mm) | 68.1 in (1731 mm) |
Head to head, area by area
Both bikes on the same scale, one area at a time.
