Tires

[rodneya]

will a 120/80 18 tire fir the back of a 73 RD350?

[Jspooner]

It will fit but that's too big for the stock rim size.

[rodneya]

It will fit but that's too big for the stock rim size.

Do you know the stock wheel width. The bike has akront rims, not stock

[Dvsrd]

Stock rear is WM2 (1.85"), front is WM1 (1.60"), at least on my European market RD350A.

[Jspooner]

Stock rear is WM2 (1.85"), front is WM1 (1.60"), at least on my European market RD350A.

The US bikes are the same.

[SUPERTUNE]

2.15 rim and some swingarm grinding off of the wrap around gusset at the front. Run the chain adjustment from half to all the way back and will work fine.
Chuck