Yuan Up / Atto 2 Wheel Alignment and Uneven Tyre Wear

Record the current pattern before changing parts

Photograph each tyre's position, visible tread pattern, sidewall details and any damage. Have tread measurements taken across the width where appropriate, rather than relying on one central reading. Record pressures under the conditions required by the applicable instructions and compare them with the vehicle label. Do not use the maximum sidewall pressure as the normal operating target. Note mixed brands, sizes or constructions and ask why replacements occurred. This record allows later work to address the original symptom rather than leaving only an invoice for four new tyres.

Distinguish steering pull from other sensations

A road test should use a safe route and a competent driver who can account for road slope, wind and tyre conditions. Record whether the symptom appears under steady travel, acceleration or braking, and whether the steering wheel sits off-centre. A vibration is not automatically an alignment problem. Review drive-unit and road-speed vibration clues when symptoms overlap. Do not release the steering wheel or perform abrupt manoeuvres to prove a point. Describe repeatable behaviour so a workshop can choose the appropriate next inspection.

Inspect wheels and suspension before adjustment

The technician should assess accessible wheels, joints, bushes, dampers and mounting areas using suitable equipment. A bent wheel, loose component or collision-related deformation can make a simple adjustment inadequate. If impact history is suspected, connect the findings with the structural repair assessment. Avoid attributing every scuff to a serious crash, but do not accept a cosmetic wheel refinish as evidence that the wheel is straight. Any safety-related defect must be addressed before a road test or alignment result is used for acceptance.

Ask for a meaningful alignment report

A useful report identifies the vehicle and applicable specification, states the measured values before and after work and explains any value that remains outside the relevant limits. A green-coloured printout alone does not establish that the correct model data were selected. Ask whether the fitted wheels, suspension changes or repairs affect the procedure. Do not request improvised adjustments to compensate for damaged parts. Where the workshop cannot establish the correct data for a China-market Yuan Up, resolve that information gap rather than borrowing an unverified overseas Atto 2 setting.

Consider braking and tyre behaviour separately

A complaint that appears primarily during braking needs a brake assessment, not an automatic alignment sale. Similarly, noise that changes with road surface may originate in the tyres. Use the braking and regeneration road test to organise observations without relying on regenerative braking to prove the friction brakes are healthy. If tyres need replacement, select the approved application and load requirements for the actual vehicle. An attractive aftermarket wheel package should not be accepted until compatibility and local approval are established.

Retest under comparable conditions

After repair, repeat the relevant safe route with documented tyre pressures and comparable loading. Confirm that the original symptom is resolved and that the steering position and warning status are acceptable. New tyres may temporarily remove an audible symptom while the cause of wear remains, so agree a follow-up inspection after normal use. Keep the old measurements, work order and new readings together. A different road surface or a very short demonstration cannot reliably show that a previous speed-dependent vibration has disappeared.

Use the finding in the ownership budget

Separate immediate safety work from monitored wear and ordinary maintenance. Include destination parts supply, fitting, balancing and any required specialist checks in the estimate. Review local service support before importing a car with unresolved wheel or suspension questions. If the seller offers replacement tyres instead of diagnosis, ask whether that proposal actually answers the original cause. The buyer should receive a clear outcome: acceptable as inspected, acceptable after specified verified work, or unresolved. A vague statement that alignment is easy does not define an acceptable repair.

Buyer checklist

• Preserve wear photographs and tyre measurements.
• Inspect mechanical condition before alignment.
• Confirm correct vehicle data on the report.
• Retest the original symptom and plan follow-up.

Questions and answers

Reference information

Use the applicable market and year documentation for equipment and operating limits. The references have their own market and publication scope; they do not establish the condition, fitted equipment or destination approval of an individual vehicle.

• BYD UK Atto 2 BEV: market-specific reference
• BYD UK Atto 2 DM-i: separate plug-in hybrid model