I just changed my RE050A's only got 22,000km on them, but that was because I was too lazy to get an alignment done.
I got them replaced and put Yokohama Advan V105's. Got them with the 3 and get 4th free deal. $1235 all four with alignment.
Early days yet(1000km), but I am very happy so far, good grip, quieter and pretty good in the wet so far. Have just gave them a run on some wet mountain roads, and didn't slip at all. But I wasn't thrashing it, but gave me slightly more confidence than the OEM bridgeys. Could just be placebo effect and that the alignment was out with the bridgestones - the camber was off a fair bit. I believe the Yokohama deal is running but might be hard to get redline sizes. I had got the last 275's at the Bob Jane I went to.