Wiggins' car attached
Advan GT Rose Gold
F: 20x10.5 +24, 285/35/20
R: 20x12 +13 (prototype spec, not sold to public), 325/30/20
Link to his sale thread (long sold):
Advan GT Wheels - Racing Gold Metallic - Prototype Specs
You don't need air to fit those sizes. Just reduce the tire size a few steps and you can achieve it with camber.
On air, it's easy.
From the FS thread: he only ran those tires because Toyo, his sponsor, made him.