I've been considering using this Man who makes tire lettering & sent me a quote last year,for a specific RWL project of tire lettering onto a brand new set of tires.He's very professional & responded quickly.He's specializes in tire lettering and seems reputable from many I've talked to who used him on Fbook & were very satisfied.His prices seemed fair I thought.
https://tredwear.com/tire-kits/brand...U3j06DLBpNY_xA