Brake Discs to change or not??/

[old git]

OK, discs are down to 5mm, min thickness says 4.5mm
So, should I change them yet or wait until they drop to the min.
Sounds a bit of a daft question, but I have no point of reference for how long the 0.5mm will last.
I am not to heavy on the brakes, so maybe it will run another year, i have no idea.
Think that If I do have to replace, will do braded lines at the same time.
Thoughts and recommendations will be considered in the usual manner.
Answers on a postcard to Old Git Competition.........

[HisNibbs]

I'd not change them until they were out of spec but it is worth keeping an eye on e-bay etc for replacements if the price is right.
Check them before each MOT.

I got gold rsv r carriers with thinner discs with my OZ wheels and I think the discs and carriers make a significant (50%?) contribution to the overal weight reduction. You might see them advertised seperately and they are worth picking up for that weight reduction alone.

[loopie2]

what about some wavy discs, armstrong maybe

[D-Rider]

or how about a pair of these ..... mine arrived this morning ....

http://cgi.ebay.co.uk/BN-RSV-TUONO-SHIV ... 518ab6dc7c

excellent price and they are the better Sunstar discs (it seems Aprilia dual sourced these - Brembo and Sunstar - and it seems that the view is that Sunstar are the better ones .... you can tell the Sunstar ones as they only have 6 bobbins between carrier and disc .... unlike the picture on ebay which shows the similar Brembo ones on the bike)

[old git]

Did look at those, but they never answered a message I sent, so....
Looked at the Blackshadow ones, likey the look of the wavey disc, anyone used them recently???
Like the idea of a full set of the same, probably in the gold if I go this route.

Thoughts, ideas????