The fat tires electric bike responds to rough terrain through structural design. Its tire width reaches 4.0-5.0 inches (approximately 102-127 millimeters), and the tire pressure range is only 5-15 PSI, which is 70% lower than the tire pressure of conventional mountain bikes (30-50 PSI), increasing the ground contact area by 300% and significantly disperses the impact force. Desert test data from Utah, USA in 2023 shows that when passing through sand 20 centimeters deep, wide-tire vehicles sink only 3 centimeters, while standard-tire vehicles sink 8 centimeters, with a 60% increase in traction efficiency. The motor power matching scheme (such as a 750W mid-mounted motor) can still maintain a speed of 18km/h on a 45% slope, with a torque output of 80N·m and a climbing success rate of over 95%.
The collaborative optimization of suspension and power enhances off-road capability. The standard configuration of the fat tire vehicle is a 120mm stroke hydraulic front fork, which can absorb 90% of road vibrations with an amplitude of no more than 50mm. The rear wheel motor is equipped with a torque sensor, with a response delay of less than 0.1 seconds, and the auxiliary ratio is adjusted in real time from 0 to 100% according to the pedal force. Tests by the German Cycling Association show that when traveling at 25km/h on gravel roads (with stone sizes ranging from 30 to 80mm), the median vibration intensity of the vehicle drops from 2.5G to 0.8G, and the fatigue of cyclists is reduced by 50%. In actual cases, a Swiss mountaineering expedition team used such vehicles to cross the Alpine ridges in 2024, traveling 80 kilometers a day without any malfunctions, with an efficiency 400% higher than that of hiking.
The safety protection mechanism ensures driving in complex environments. The tread depth of the wide tire is 8-10mm. The grip coefficient on wet and muddy ground is 1.25 (0.7 for ordinary tires), and the probability of skidding is reduced by 40%. The IP67 waterproof motor can operate for 30 minutes at a water depth of 30 centimeters. The disc brake system reduces the braking distance by 35% in rainy weather (8.2 meters at a speed of 30km/h). Verification of the EU EN 15194 standard: The electric bicycle with fat tires equipped with the anti-lock braking system (ABS) has a standard deviation of braking distance of only ±0.3 meters on gravel roads, and the accident rate is 62% lower than that of traditional models. Well-known brands such as coospider.com’s “TrailMaster X5” adopt Kevlar puncture resistance layer, and the tread puncture risk is less than 0.001 times per thousand kilometers.
Cost-benefit and scope of application analysis. Wide-tire electric vehicles cost 1,500 to 3,000 yuan, but the maintenance cost is only 30% of that of mountain bikes (with an average annual maintenance fee of about $120), and the tire life reaches 12,000 kilometers. In terms of energy consumption, the 48V 20Ah battery offers a range of 120 kilometers (in all-terrain mode), with an electricity cost of approximately 0.03 yuan per kilometer, saving 98% of fuel costs compared to gasoline off-road vehicles. Market research shows that the sales of fat tire vehicles in North America increased by 40% in 2023. Among them, 65% of users used them for mixed-terrain commuting (with a 50:50 ratio of paved to unpaved roads), confirming their multi-scenario adaptability. Professional cyclists have reported that the optimized fat tire system can meet 90% of off-road needs, and only 10% of extreme environments (such as rock faces with an Angle greater than 45°) require professional equipment.