The steering wheel is loose.

方向盘松了。

youdao

A great chunk of loose kerbing smashed into my left-front wheel, bursting the tyre and denting the rim.

我车子的左前轮撞在一大块松动的路缘石上，导致车胎爆裂、轮辋凹陷。

youdao

The reason of wheel sinkage on loose soil is analyzed, and the wheel-soil interaction model is built. A dynamic simulation model is developed with the equivalent conversion method in ADAMS.

通过分析松软月面上车轮下陷原因，建立了车轮与月面相互作用模型，在此基础上对ADAMS进行二次开发，通过等效转换建立了松软月面上月球车仿真模型。

youdao

Alonso survived 13 laps before he came back to the pits to revert to slicks but a problem with a loose wheel nut saw him trapped in the pits for 18 seconds leaving him short on time to close down Schumacher.

BBC: SPORT | Motorsport | Formula One | No excuses for mistakes - Renault

Button's disappointing season continued when he failed to finish in the points after being sent out from his final pit stop with a loose front wheel, having been fifth at one stage.

CNN: Vettel apologizes after controversial F1 win in Malaysia

"It is possible that with an old, not properly maintained fifth wheel that the device can get loose, the sides can wear away, the hole that the pin fits into is no longer snug and rigid, " Scott said.

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