A vintage tire split in two, for easy prinating of the white wall.
Pre-made as 17 inch scale 1/25
Designed so it it is easy to print and assemble.

UPDATE:

Added narrow white wall inserts. A ring consists of 2 pieces for that. The tire remains the same.

Added 13 inch narrow wall set. 13x7 tire, inner and outer narrow white wall ring.

Added 17x12 and 16x12 inch widewalls. Added 16x7 inch wheels


For other dimensions as 1/25, use this calculation scaled from the 17-inch parts:
15-inch : 87,5% or x0,8750
16-inch : 93,75% or x0,9375
18-inch : 106,25% or x1,0625

For dimensions for 1/24, use this calculation scaled from the 17-inch parts:
15-inch : 91,14% or x0,9114
16-inch : 97,65% or x0,9765
17-inch : 104,16% or x1,0416
18-inch : 110,67% or x1,1067

Note that the depth of the inner ring will change, if you scale on Z. The rims in our collection must be scaled according to that dimension.