New Yamaha Bike Spied: Is It The R15 V4 Or The R125? We Analyse
- Jul 23, 2021
- Views : 55164
A few days ago, we brought you news about a new parallel-twin 250cc Chinese sports bike, the Tairong GP1 250R. We were initially quite excited, even hoping that it could take on the Honda CBR250R, but we then learned that it makes less power than even a Pulsar 180F. Its closest competition actually comes from 150cc sports bikes like the Yamaha R15, so we’re going to compare the two on paper and see who emerges victorious.
Powertrain
Specifications |
Tairong GP1 250R |
Yamaha R15 V3 |
Engine |
249.5cc, parallel-twin, liquid-cooled engine |
155cc, single-cylinder, liquid-cooled, 4-valve SOHC VVA engine |
Bore x Stroke |
55 x 52.5mm |
58 x 58.7mm |
Compression Ratio |
8.7:1 |
11.6:1 |
Power |
17PS @ 8500rpm |
18.6PS @ 10,000rpm |
Torque |
16.5Nm @ 6000rpm |
14.1Nm @ 8500rpm |
Gearbox |
6-speed |
6-speed |
A 249.5cc parallel-twin with nearly square cylinder dimensions sounds promising on paper. But then you see that the compression ratio is just 8.7:1 and peak torque arrives at 6000rpm. As a result, the R15 manages to trump the Tairong in the power department, even if the Chinaman does make a comeback in the torque fight. And it might look like the R15’s motor is a peaky unit with all the power stacked at the top of the rev range, but thanks to its VVA technology, the grunt is actually well spread across the powerband. The results are plain to see: while the GP1 250R tops out at 125kmph, the R15 will keep going all the way to 136kmph, despite a 95cc displacement handicap.
Underpinnings
Specifications |
Tairong GP1 250R |
Yamaha R15 V3 |
Frame |
Semi-trellis frame |
Deltabox (perimeter frame) |
Suspension |
F: Conventional telescopic fork R: Monoshock |
F: Conventional telescopic fork R: Linked adjustable monoshock |
Brakes |
F: Twin discs R: Single disc |
F: 282mm disc R: 220mm disc |
Tyres |
F: 110/70-17 R: 150/70-17 |
F: 100/80-17 R: 140/70-R17 |
The Tairong definitely has the beefier underpinnings of the two: double discs up front and chunkier tyres at both ends. But with such mediocre performance, that braking setup seems like overkill, and even though its tyre dimensions are bigger, the R15 packs in a radial rear which should offer superior grip.
Dimensions
Specifications |
Tairong GP1 250R |
Yamaha R15 V3 |
Length x Width x Height |
2050 x 735 x 1155mm |
1990 x 725 x 1135mm |
Wheelbase |
1420mm |
1325mm |
Ground clearance |
180mm |
170mm |
Fuel tank capacity |
14-litres |
11-litres |
Seat height |
780mm |
815mm |
Kerb weight |
186kg |
142kg |
The GP1’s comfortable 780mm seat height would’ve made it quite a welcoming motorcycle if it weren’t for its massive 186kg kerb weight. All things considered, the Tairong’s only redeeming factor is its large 14-litre fuel tank and more relaxed ergonomics, which should make it a better long-distance tourer. The R15 is smaller, much lighter and has a shorter wheelbase, which should make it the more agile and livelier bike of this pair.
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