13 Wheel
Alternative Meanings
Ring, Loop
Radical Combination
Readings
On’yomi
りん
Kun’yomi
わ
Nanori
None
Meaning Mnemonic
For your car you use a hat, some ground and a bookshelf to build a new wheel. I mean, it's generally ring and loop shaped, so it should work, right?
Reading Mnemonic
Your wheel is... generally ring (りん) shaped, so that's good.