Thule K-Summit lug nut adapters are required to mount K-Summit tire chains to the vehicle. Each K-Summit tire chain will come with 2 or 3 sizes of adapters, but if you need a replacement adapter, they can be ordered separately in pairs.
Lug nut adapter are required to mount the chain to the vehicle
The eventual replacement is easy: just unscrew the mounted adaptor and mount the correct one
K-Summit passenger chains include 17 and 19mm adaptors (21, 22mm sold separately)
K-Summit XL SUV chains include 19, 21mm adaptors (17, 22mm sold separately)
K-Summit XXL SUV chains include 17, 19, 21mm adaptors (22mm sold separately)
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