85mm x 38mm Robot Car Wheel with Coupler For ATV

The 85mm x 38mm Robot Car Wheel with Coupler is a black rubber tyre with red plastic rim, measuring 85mm outer diameter and 38mm width, compatible with BO and DC gear motors, and includes a coupler for direct shaft mounting — designed for ATV-style robot builds requiring larger wheels than standard robot car configurations. This rc car wheels variant is the largest and widest wheel in StemVolt’s entire wheel lineup — 85mm outer diameter clears significantly more ground obstacles than the 30-65mm range of smaller robot wheels, and the 38mm width is nearly double the 20mm maximum of the previous widest wheel in the range, providing a substantially wider rubber contact patch for better traction distribution.

This 85mm heavy duty wheel’s bundled coupler distinguishes it from every other wheel in StemVolt’s lineup — where other wheels require separately sourced hex couplers, shaft adaptors, or direct press-fit onto motor shafts, this atv wheels variant includes the coupler as part of the package, enabling direct mounting onto BO or DC gear motor shafts without any additional hardware purchase. The black rubber tyre and red rim two-color construction also gives this 85mm large wheels for robot a visually distinctive appearance suited to competition and exhibition robot builds where an ATV aesthetic is desired alongside functional performance.

The wide 38mm rubber tread of this 85mm wheel for smart car distributes the robot’s weight across a larger surface area per wheel than narrower tyres — improving stability on uneven surfaces and reducing the risk of individual wheel sinkage on soft or irregular terrain compared to narrow-tread wheels of the same diameter. Available from StemVolt, offering quality DIY components at competitive prices. This 85mm robot wheel is ideal for ATV, DIY, and robotics builds.

Related Product:

• Checkout Foam Wheel 48mm 
• Also explore: Robot Wheels – Standard and Mecanum

Features:

• 85mm diameter — largest wheel in StemVolt’s robot wheel lineup
• 38mm width — nearly double the previous widest wheel at 20mm
• Coupler included — no separate shaft adapter purchase required
• Compatible with both BO motor and DC gear motor shafts

Technical Specifications:

Applications:

• ATV wheel used for large-diameter rough surface robot car build
• India robotics uses 85mm heavy duty wheel for outdoor robot demo
• STEM kit uses atv wheels for large-scale robot wheel comparison
• Maker uses 85mm large wheels for robot for BO motor car build
• College uses 85mm wheel for smart car for ATV terrain competition

Package Includes:

• 1 x 85mm x 38mm Robot Car Wheel with Coupler