Tyres — Bias-ply versus radial: one practical advantage of bias-ply Compared with a radial tyre, which benefit is commonly associated with bias-ply construction under low-speed conditions?

Introduction / Context:
Tyre construction affects ride, handling, wear, and efficiency. Radials dominate modern road use, but bias-ply tyres have certain characteristics that can be advantageous in specific conditions.

Given Data / Assumptions:

• Standard passenger-car tyres for road use.
• Comparison focuses on general behavior, not specialty tyres.

Concept / Approach:
Bias-ply tyres have cords laid diagonally and criss-crossed, which gives a more compliant, flexible sidewall at low speeds on rough surfaces, often perceived as a cushier ride. Radials, with belts under the tread and radial sidewalls, deliver lower rolling resistance, better heat dissipation, longer tread life, and superior high-speed stability, but the ride can be firmer.

Step-by-Step Solution:
Identify bias-ply traits: flexible carcass and sidewalls → cushioned low-speed ride.Identify radial traits: lower rolling resistance, longer life, better heat management.Thus, the notable bias-ply advantage is smoother low-speed ride.

Verification / Alternative check:
Historic use on older vehicles and some off-road/trailer applications reflects the comfort and robustness bias-plies can offer at modest speeds.

Why Other Options Are Wrong:
Longer life and lower rolling resistance are radial strengths, not bias-ply.High-speed heat resistance favors radials due to internal heat paths.“None of these” ignores the real comfort advantage.

Common Pitfalls:
Assuming “better” means “for all metrics”; tyre design involves trade-offs.

Final Answer:
smoother ride at low speeds