when i got my mig the old boy who had it had sum m/s 185 70 15s fitted to say the journey home was very smokey due to fk all grip!! i then fitted a 225 60 15 tyre & its really comphy & doesnt tramline!! i then went to 17s with 225/45/17s all round bit hardish ride but good drive cornered well, then i went to a set of 245 40 17s big mistake!! followed every bump dip tramline inthe road motorway awfull!!
ive bared with them for 2k & put my steels back on!! drives really well again!!
But i think im bout to get pissed off again by fitting a set of either 235 35 19s/245 40 19s on front & 275 30 19s/275 35 19s on rear!! hope im not making a huge mistake going for looks rather than driveability!!anything wider than a 235 on front seems to be deadly!!(i had a set of softstar pfl elite 16s on my old saloon with 225 55 16s again drove great!!) but tyres are getting harder to souce in a good brand of tyre tho...
Have you thort of checking your tyre pressures or going for a better quality damper to make it a softer ride??
Even tyre brands differ in hardness, check your sidewall ratings close to 100 is soft upto 300/380+ is harder meaning a harder tyre firmer ride longer life, also a tyre with a rim protector has a harder ride than one without