Tyre Pressures - Cisco's Micra Files

Welshbob1964 » CMF Member United Kingdom Member since: Posts:	Tyre Pressures	Sun 16 Dec 2012 10:41:03 PM
	I just did a tyre depth check and it seems my fronts are running under inflated despite I keep them at the recommended 33psi. Any one else had this issue and found the right psi for the fronts on a 1.3?

Mike R » CMF Member United Kingdom Member since: Posts:	Re: Tyre Pressures	Mon 17 Dec 2012 04:38:44 AM
	I had a 1 litre super and I found it was best to run the tyres a bit harder , tended towards the fully loaded pressures as I found they also wore like they were under inflated , even with my present car I have found the same and again I am using the fully loaded pressures .

gee-aye-dee » CMF Member Australia Member since: Posts:	Re: Tyre Pressures	Mon 17 Dec 2012 08:48:53 AM
	at least 36 id put in them. i run most cars at 40psi but micra being so light at least 36. even if you kept it 32 in the rear if you dont carry passengers/cargo very often.

sikK11 » CMF Member Darwin Australia Member since: Posts:	Re: Tyre Pressures	Mon 17 Dec 2012 09:17:22 PM
	40psi is to high for most vehicles. Here is a guide. Smaller cars Micra, Swift etc. 34-36psi Medium cars Commodore, falcons etc. 36-38psi 4WD's sit good at around 40psi Trailer tyres and light truck tyres at the Recommended PSI anywhere from 40-65psi. This is the pressures we set them at when the leave Bridgestone.

Welshbob1964 » CMF Member United Kingdom Member since: Posts:	Re: Tyre Pressures	Mon 17 Dec 2012 11:10:59 PM
	Thanks all, I have pumped them up to 35psi at the moment but I think I may add a little more. The rears seem fine and wearing even its just the fronts. Cheers :-)

RTK » CMF Member Australia Member since: Posts:	Re: Tyre Pressures	Tue 18 Dec 2012 08:59:24 AM
	I run at 38(f) 36(r) no problem with with wear, very even

Rudy » CMF Member Hunter Valley mob 0400767960 Australia Member since: Posts:	Re: Tyre Pressures	Tue 18 Dec 2012 10:19:36 AM
	I worked for a tyre service for a while so I'll back up sikK11's little guide. I personally run the same pressures as RTK cause I reckon a couple more psi for low profile tyres. I also check for total-toe wear, this will show up as wear on both inner OR outer edges, and is the only easily adjusted part on a micra during a wheel alignment. steering wheel off center doesnt mean the total toe is necessarily wrong, if tyres are wearing even just remove and re-center the steering wheel yourself tyre wear inner or outer on just one side is either a castor and/or camber problem. I would steer clear of tyre shops and use a front end specialist to do the adjustment and will require the purchase/fitting of camber bolts,castor kits, etc I changed springs a few years back and have gone through a few tyres, I dont rotate my tyres, I have never wheel aligned it, the tyres wear fine, I dont fix wat aint broke

Welshbob1964 » CMF Member United Kingdom Member since: Posts:	Re: Tyre Pressures	Tue 18 Dec 2012 07:48:49 PM
	Rudy WROTE: "I worked for a tyre service for a while so I'll back up sikK11's little guide. I personally run the same pressures as RTK cause I reckon a couple more psi for low profile tyres. I also check for total-toe wear, this will show up as wear on both inner or outer edges, and is the only easily adjusted part on a micra during a wheel alignment. steering wheel off center doesnt mean the total toe is necessarily wrong, if tyres are wearing even just remove and re-center the steering wheel yourself tyre wear inner or outer on just one side is either a castor and/or camber problem. I would steer clear of tyre shops and use a front end specialist to do the adjustment and will require the purchase/fitting of camber bolts,castor kits, etc I changed springs a few years back and have gone through a few tyres, I dont rotate my tyres, I have never wheel aligned it, the tyres wear fine, I dont fix wat aint broke" I am loathed to let anyone touch my steering, I am lucky to have steering that if you let go on a good road will stay straight, the steering wheel is straight to. I have wear on both outer edges of the front tyres, not bad like a tracking wear just the outsides are .5 mm lower than the center. I will run them at the top psi setting for a while and see how they wear. Cheers.