if you're really hung up on the tyres sizes front & rear you could run Proline V3 on the rear which are a wider wheel & tyre. not available in all tread patterns but there might be something you like
tbh i can remember thinking that the tenth buggys had ridiculously oversized rear tyres when i started using them but then i came from 8th so i guess it works both ways
they are almost "cartoon" oversized though aren't they?
