Ah yes, you're the chap who sells them, I forgot!
I think a 22mm would work well with the stock front bar imo. It'll sharpen up the turn-in but will increase the liklihood of cocking a rear wheel on tight turns
I think I need to get one. Do you need to drop the exhaust to fit it or can you negotiate the bar around the exhaust in situ?
I've tried a few ARB combinations over the years, but admittedly on FWD VWs, but the prinicpal is the same. The R32 has extra weight and wider tyres on it's side though, so has more mechanically grip compared to FWD.
I got caught out twice. The first time was with Neuspeed 28/25s on my Corrado VR6. That car also had a quaife diff but whilst the dry cornering was exceptionally flat, I ploughed into a wet roundabout a little too fast and understeered right off it! I'd previously taken the roundabout at the same speed in the wet with the stock bars and had no problems. The 25mm bar was just waaaaay too big for the car imo, but as with all these components, they're sold as 'race' parts only and come with disclaimers.
2nd time was when I had an Eibach 25mm rear bar and stock front bar. Beautiful turn in, understeer more or less erradicated but this time I lost the back end, again on a wet roundabout. I did a 180 and buckled a rear wheel when it thumped into the kerb.
I'm not a driving god and neither am I numpty. These two incidents happened over 9 years, so it's not like I was losing it every weekend!
I'm not trying to put anyone off ARBs, far from it, but just to warn people to be careful in the wet with them
And lastly, the thicker the ARB, the worse the ride quality becomes because they effectively increase the spring rate. The car can very easily get thrown off course by mid corner bumps.