I have B14s and get the same resonance on similar surfaces. I also run 265/40 on 20” rims. I think it’s a combination of the larger wheels and the firmer springs and dampers.Yeah it’s still pretty comfortable on 265/40/20. The only thing that lets it down, and this could actually just be attributable to the 20” alone and nothing to do with the Eibachs, is resonance on concrete sections of motorway, which can be pretty horrific (eg m25, junction 8 anti clockwise)
Ref. the resonance, I think all vehicles are noisy on that particular concrete part of the M25. I'd recommend Goodyear F1 tyres - seem to be the quietest of the bunch.
I was like you looking for a good cheap set.....but I couldn't find out any long term reviews so I saved up and bought a more expensive named brand from a suspension specialist.hi every one im looking to buy some coil overs for my t6 its on a 18 plate t30 I have 20 inch alloys on it any ideas please looking to pay up to 500 for a set I know not going to get nout special but don't want to put a set on to find year or so down the line need replaceing any advice would be much apricated thanks again every one