Accelera 275/40 R21 107Y IOTA ST68 2024

Accelera IOTA ST68 275/40 R21 107Y XL is a summer highway tyre designed for SUVs and high-performance passenger vehicles, combining stable road behaviour, responsive steering and balanced performance on dry and wet paved surfaces. Its 275 mm section width provides a broad contact footprint, while the 40-series profile supports precise handling with a sporty road feel. The 107Y XL specification supports up to 975 kg per tyre and speeds up to 300 km/h.

About Accelera IOTA ST68 275/40 R21 107Y XL

The IOTA ST68 is a road-oriented tyre developed for drivers who prioritise highway stability, predictable steering and everyday paved-road performance. Its directional tread layout uses longitudinal grooves and multiple tread channels to help evacuate water while maintaining a stable contact patch.

Tread design and road stability

The tread pattern is designed to maintain consistent road contact and directional stability during straight-line driving. Its broad footprint helps support controlled handling, while the longitudinal channels assist water evacuation from beneath the tyre.

Dry-road handling and cornering

The 275 mm section width provides a wide contact area that supports cornering stability and steering response. Combined with the low 40-series profile, the configuration is suited to drivers looking for a more direct and controlled steering character on paved roads.

Wet-road performance

The main grooves and tread channels are designed to move water away from the contact patch and help maintain traction on wet roads. The tread design supports predictable braking and handling in changing road conditions, although actual wet performance depends on tyre pressure, tread depth, vehicle condition and road surface.

High-speed highway capability

The 107Y XL specification provides a maximum load rating of 975 kg per tyre and a Y speed rating of up to 300 km/h. The XL construction is intended for vehicles requiring additional load capacity. The manufacturer's approved tyre specification should always be checked before fitting.

Who should consider this Accelera?

Accelera IOTA ST68 275/40 R21 107Y XL is suitable for drivers seeking a summer road tyre with a wide contact footprint, responsive steering, stable highway behaviour and high-speed capability. It is primarily intended for paved-road and highway use rather than demanding off-road driving. Before purchasing, verify that the vehicle manufacturer approves the 275/40 R21 size, 107 load index, Y speed rating and XL construction.