do an archive check on this, but I think that the general consensus was that those temps are perfectly normal. Mine is usually around 250, with spikes to 280 or so when doing lower speed, higher rev twisty stuff.
My 620 runs anywhere between 230- 250 on normal days. Occasionally while riding in traffic on very hot days it got to 270... no problems, soon as we got moving a bit it went down to the normal 230-250.
Although my 620 had a faulty oil temp sensor (replaced under warranty) which was reading about 60 degrees too high... it would dip in the low 300's which freaked me out.. then I realized even at cold-starts it would show about 140.. which wasn't right.. now it reads "LO" until it hits about 120 on cold starts.
Get the temp sensor checked. My '02 620 had a faulty sensor. It wasnt reading lo at all. Just like everyone else said, that temp should be fine, and if if gets too hot, I think the display actually says "hi"
have the dealer look at it if its under warranty. know what I mean Vern?