The manufacturers of the run-flats say that patching tires voids their warantee, so almost nobody wants to go that route. Driving on tires that are no longer covered for manufacturer defects.
-=] 2008 335i e92 Montego Blue & Black; Prem; Sport; AT-paddles
-=] Mods= VEI Digital Boost Gauge in RiXeffects custom Pod
-=] Tinted (front: 3M Crystalline 70); (rear: Johnson InsulatIR 40 ceramic); 3M ClearBra