I have 16" 225 55s all round (stock) and run as described on the door sticker.

No luggage - one driver:

Cold temp. 36 front, 39 rear
Warm temp. 32 front, 36 rear

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'93 R129 500SL-32
'89 190E 2.6 - sold in 2002

http://antron.pwp.blueyonder.co.uk/i...nature/Sig.jpg