The 'leather' in these cars seems a strange beast, I wonder if it is actually leather. The colour rubs off, so has no depth to it.
It has some kind of coating as they claim it is more uv stable. Having used different cleaners, I now just wipe them over with warm soapy water, seems to do the trick.
I use gliptone gt11 and gt12 for my e85 car seats. Gives them a traditional leather smell afterwards. They are black seats though so no idea if any good on red.
Read my post here;
I have coral red leather also.
http://www.z4-forum.com/forum/viewtopic.php?f=23&t=98862&p=1473130#p1473130
Brilliant company, advice and product, you get what you pay for..
DO NOT USE AUTOGLYM it is a poor product. The professional who advised me spotted it immediately.....
Take some before and after pics for the forum, I did not do this but I know the lads (and lasses) would appreciate it.