Thule K-Summit Low-Profile Passenger Car Snow Chain, Size K23 (Sold in pairs)

I couldn't wait to get these, given Seattle's unexpected week of ice. The chains fit several tire sizes with clear instructions for removing 0 - 4 sizing clips for each size (all four for my 225/50-R17). These are as easy on/off as this video shows (http://www.youtube.com/watch?v=opugSM6xs58). No need to get knees wet, or lay on the ground.

The chains ride only on the tread and not on the back of the wheel/tire, requiring no inside clearance. The thin cable chains add only about 10mm to the top clearance. The ice grips are aggressive and the chain angles will provide lateral slide resistance.

The set came with the tools needed to remove the clips and mount the lugs. The clips are put on from the factory with something like "Lock-tite". Recommend a 7mm socket to replace the wrench and your own good set of metric Allen wrenches (3mm).

Only problem was the lug locking mechanism was too shallow to fit my deeply recessed lugs on the standard wheels of my car (Infiniti I-30t). This should not be a problem for most cars. Amazon quickly allowed return/refund. Thule sent me to an authorized local dealer for a fit for their CS-10's which do not require a lug lock, but will require me to be on the ground in the slush to mount and dismount.

I would have loved to have kept these. I guess it is too much to expect Thule to have researched all the kinds of wheels on the market.