Faulty steering knuckles are wearing the front tyres on my 2023 Isuzu MU-X 4WD. Who pays for the fix?

Generally speaking, a new-car warranty won’t cover items that are considered consumables. That normally includes the battery and tyres. However, if the tyres have become worn because of a fault with the vehicle’s suspension the situation might be different.

That depends, however, on whether the suspension fault was caused by poor materials or assembly at the factory, or because you hit a pothole at 100km/h or the suspension was in some other way damaged accidentally. If it’s the former, you might be able to convince Isuzu that the warranty claim on your suspension should also include new tyres. That said, given the tyres were already worn to the tune of 30,000km, don’t expect Isuzu to cover the full cost of brand new tyres.

Your best bet – if, indeed, the tyre damage is the result of a suspension problem within the warranty – is to contact Isuzu’s customer service department to see if you can work out a deal to fix the car and replace the tyres on a pro-rata basis.