MG ZR Forums banner
1 - 13 of 13 Posts

·
Registered
Joined
·
609 Posts
Discussion Starter · #1 ·
Bought my zed 105 two weeks ago. Checked the tyre pressures at the weekend (205/50 R16) and found they were all about 32 when the book says 28F and 26R. I've dropped the pressures down to what the book recommends and I don't know if it's my imagination or not, but it feels like I've lost a bit of road-grip?

Advice welcomed!

Cheers
Ade
 

·
Registered
Joined
·
103 Posts
checked mine today 205/45/17 front had 28 supposed to be 33 rear had 40 supposed to be 28 i must say it is alot less bumpy ride now and handles better god knows how it got 40 in the rear.
 

·
Senior Member
Joined
·
1,443 Posts
It depends on when you checked them mate. If you checked them after driving a few miles to the local garage then your tyres would have heated up and the psi reading will be higher. They may have only been 28-29psi when cold.

So you've taken them down from 32 to 28 at the garage with nice warm tyres and the next morning when they're cold they may only read 25psi.

Or did you check them when they were cold with your own pressure gauge??

I used to run 32psi all round in my ZR160.
 

·
Registered
Joined
·
609 Posts
Discussion Starter · #4 ·
Mitchy said:
It depends on when you checked them mate. If you checked them after driving a few miles to the local garage then your tyres would have heated up and the psi reading will be higher. They may have only been 28-29psi when cold.

So you've taken them down from 32 to 28 at the garage with nice warm tyres and the next morning when they're cold they may only read 25psi.

Or did you check them when they were cold with your own pressure gauge??

I used to run 32psi all round in my ZR160.
No, I did check with my own gauge and they were cold. Do you think i should put a tad more in than the book pressures then?
 

·
Flat Capper
Joined
·
707 Posts
Mine are running about 30 all round (32 when warm) - its what I was told by the dealer...

I have to hold my hand up and admit I havnt checked the book though!

I can usually tell when a tyre has lost a bit of pressure by the car handling changing, so put it back up again?

I also heard (but again, not checked) that faster driving and heavier loads require a higher psi than the book states for normal driving?
 

·
Banned
Joined
·
14,285 Posts
we had this discussion b4 and if i remember correctly (which i prob don't, lol) 31 psi is not the amount of air in the tyre its the pressure that its pumped upto.

So when i had new wheels coz the tyres were alot smaller i thought i'd have less air in em (which i do) but the psi is still the sdame!!!

Hope that makes sense!!

:hiding:
 

·
Registered
Joined
·
609 Posts
Discussion Starter · #11 ·
ZRVic said:
we had this discussion b4 and if i remember correctly (which i prob don't, lol) 31 psi is not the amount of air in the tyre its the pressure that its pumped upto.

So when i had new wheels coz the tyres were alot smaller i thought i'd have less air in em (which i do) but the psi is still the sdame!!!

Hope that makes sense!!

:hiding:
I think it does ... :book:

Thanks
Ade
 

·
Registered
Joined
·
14,935 Posts
Tyre pressure WTF is that.... :mrgreen:

I put some in my tyres once, didnt have a clue, then my dad checked em ages ago think there was about 36 in there or something, but he went bloody mad thats for sure...LOL...

Think i need to check em tho :wallb: Havent done it for ages :guns:
 

·
Registered
Joined
·
609 Posts
Discussion Starter · #13 ·
Stopped on way home and put in 31 all round. Stuck to the road like glue again ... thanks Vic and others.

Ade
 
1 - 13 of 13 Posts
Top