Originally Posted by shivaswrath
You mention the ET47 on the 400's helping, does it bring the rim closer to the hub?
I'm not sure I want to spend $200 experimenting..ironically, my concern was actually with the 12mm's up front. Any thoughts on that?
Yeah, they will be closer to the hub, 13mm closer compared to the 397, but the rear wheel will be 12mm wider. The numbers cancel each other out so an 8.5" wheel at ET47 will sit out exactly the same as an 8" wheel at ET34. On M perf suspension you will be 1/2" higher compared to H&R sport, plus you should have less body roll, so I can't see that rubbing.
I've not used spacers on the front, but would be reasonably confident 12mm will work.
Of course we're talking mm's here, so obviously the tire and its sidewall play a big role.