雪炼，又称胎炼，是安装在车轮的一种链条，使车辆在雪地或结冰路面上行驶时，能仍有抓地力而不会打滑。

雪炼安装在车辆的驱动轮上，且左右两边均要安装。由于安装雪炼后，可能会增加油耗，且车速不能超过每小时50公里（31英里），因此是供非经常性进入雪地或结冰路面行驶的车辆所使用。在一些常下雪的地方，车辆通常会更换雪胎以在雪地或结冰路面上行驶。

前轮安装雪炼的汽车

后轮安装雪炼的摩托车

Snow chains, or tire chains, are devices fitted to the tires of vehicles to provide maximum traction when driving through snow and ice.

Snow chains attach to the drive wheels of a vehicle or special systems deploy chains which swing under the tires automatically. Although named after steel chain, snow chains may be made of other materials and in a variety of patterns and strengths. Chains are usually sold in pairs and must be purchased to match a particular tire size (tire diameter and tread width). Driving with chains reduces fuel efficiency, and can reduce the allowable speed of the automobile to approximately 50 km/h (30 mph), but increase traction and braking. Some regions require chains to be used under some weather conditions but some areas prohibit the use of chains which can deteriorate road surfaces.