Tyre Pressures

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   Hi, I've recently acquired an e12 with Alpina B7 suspension and wheels (205/55 ZR16 front and 225/50 VR16 rear) - could anyone please tell me what the correct tyre pressures should be?

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zonfeld Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 28 Oct 2013 Location: Surbiton, UK Status: Offline Points: 2	Post Options Post Reply Quote zonfeld Report Post Thanks(0) Quote Reply Topic: Tyre Pressures Posted: 25 Nov 2013 at 10:13pm
	Hi, I've recently acquired an e12 with Alpina B7 suspension and wheels (205/55 ZR16 front and 225/50 VR16 rear) - could anyone please tell me what the correct tyre pressures should be?

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Dougal Cawley Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 05 Nov 2013 Location: United Kingdom Status: Offline Points: 21	Post Options Post Reply Quote Dougal Cawley Report Post Thanks(0) Quote Reply Posted: 24 Jul 2024 at 5:18pm
	Oo tricky that. standard was 195/70VR14 and at last we have managed to get Pirelli to make us a good tyre in that size. https://www.longstonetyres.co.uk/195-70vr14-pirelli-cinturato-cn36.html there hasnt been anything good in this size for years. I cant work out how to do an attachment, but none of my period fitment guides mention tyre pressures for Alpinas
	Dougal

Mike Fishwick Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 04 Aug 2006 Location: France Status: Offline Points: 2753	Post Options Post Reply Quote Mike Fishwick Report Post Thanks(0) Quote Reply Posted: 25 Jul 2024 at 3:34pm
	Manufacturers tyre pressures are not recorded on tablets of stone, but are starting points, usually selected as a compromise with a higher pressure in the rear to promote a general understeering characteristic. You should not get excited about having Alpina wheels and suspension, as your car will respond to changes like any other. Some people of course have an unhealthy fetish about Originality, and are afraid or unwilling to change anything - even though the tyres, fuel, oil, battery, bulbs, and other items are probably not original. Make your own mind up! In the real world, some judicious changes can be usefully made - try using the higher pressure pressure F & R, then increase them by about 1 psi every trip, and see what you think. I would suggest that a final pressure would be about 2.5 bar / 35 psi. Edited by Mike Fishwick - 25 Jul 2024 at 8:49pm
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Norrie Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 15 Jul 2012 Status: Offline Points: 4117	Post Options Post Reply Quote Norrie Report Post Thanks(0) Quote Reply Posted: 29 Jul 2024 at 3:12pm
	Advisory, in terms of Alpina, new Cars will have Pirelli types embossed ALP, other models will have had only Michelin tested. There is an alleged case of an onwer fitting the correct size tyre and correct rating but not a brand approved by the manufacturer ie Alpina as opposed to BMW. It is alleged this allowed the insurer not to pay out as tyres were not fitted in accordance with manufacturers instructions.

Dougal Cawley Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 05 Nov 2013 Location: United Kingdom Status: Offline Points: 21	Post Options Post Reply Quote Dougal Cawley Report Post Thanks(0) Quote Reply Posted: 11 Apr 2025 at 3:24pm
	Hi There are loads of period fitment guides at the bottom of this page. If you are using a tuyre on 16" wheels, to maintain a similar diameter without going for too wide, you will have less volume inside the tyre, therefore it will need a higher pressure of asir to make the work satisfactorily. https://www.longstonetyres.co.uk/classic-car-tyres/bmw/5-series.html#123#123#123#123#123#123#123 you might want the Cinturato P7 like the M1 had they would handle really well,.
	Dougal