Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Tyres
-
- Newbie
- Posts: 8
- Joined: Sat Jan 27, 2018 1:34 pm
Tyres
I have a 2010 2.3i auto and the tyres are all Potenza 225/45 R17 rf.
Is this normal and should I still go by the tyre pressures on the door pillar.
I am thinking of changing to normal tyres of the same size or should I put larger tyres on the rear.
Can any one recommend tyre pressures for non rf
Thanks
Mike
Is this normal and should I still go by the tyre pressures on the door pillar.
I am thinking of changing to normal tyres of the same size or should I put larger tyres on the rear.
Can any one recommend tyre pressures for non rf
Thanks
Mike
- Mr Tidy
- Legend
- Posts: 23838
- Joined: Wed Jul 02, 2014 12:18 pm
- Location: North West Surrey
Tyres
As far as I know all Z4s were fitted with Bridgestone Potenza run-flats, so the pressures on the door pillar will be correct for what you've got at present.
Sorry I can't help with your questions regarding swapping to non-RFTs - I haven't done it yet!
But I'm sure someone will be able to help.
Sorry I can't help with your questions regarding swapping to non-RFTs - I haven't done it yet!
But I'm sure someone will be able to help.
Coupes because stunning!
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black
Current - Silver Grey MC, Imola Red heated Nappa & carbon trim. Aeros, H & R Coil-overs, 224s, OE Strut brace, Nav, cup-holders, DSP Hi-Fi, pdc, cruise, MFSW, no CDV! E90 330i daily
Gone - Montego Blue
Gone - Ruby Black
Tyres
I too had a 2010 23i auto on 18” rims and the rear tyres were wider than the fronts. In fact I think this is true for all E89’s (and all Zeds) I would guess the rear tyres on yours would originally have been 255/40.silverfox8 wrote: ↑Mon Apr 16, 2018 5:50 pm I have a 2010 2.3i auto and the tyres are all Potenza 225/45 R17 rf.
Is this normal and should I still go by the tyre pressures on the door pillar.
I am thinking of changing to normal tyres of the same size or should I put larger tyres on the rear.
Can any one recommend tyre pressures for non rf
Thanks
Mike
-
- Member
- Posts: 135
- Joined: Mon Dec 04, 2017 6:14 pm
- Location: Dartford, Kent
Tyres
I just got a quote for mine and the guy recommended going for 255/40's for the rear, reason he gave me for the smaller profile is that it allows the car to run level on all 4 wheels as the back wheels are bigger.
as for pressures, I dont know because I havent fitted them yet. I have a cracked M326 that needs replacing so Im going for an after market set of wheels and a full set of new rubbers (non-runflat)
Tyres Im looking at either Michelin MPS4's or Goodyear Assymetric 3's
as for pressures, I dont know because I havent fitted them yet. I have a cracked M326 that needs replacing so Im going for an after market set of wheels and a full set of new rubbers (non-runflat)
Tyres Im looking at either Michelin MPS4's or Goodyear Assymetric 3's
-
- Newbie
- Posts: 8
- Joined: Sat Jan 27, 2018 1:34 pm
Tyres
Thanks all for your help.
Mr Tidy, I wasn't sure that the pressures on the rear might have come down as there is less rubber on the road.
Busterboo, I have been running snow tyres on another set of wheels and they were far more comfortable that is why I thought of going for normal tyres.
Essex Zed, I bought my car from a BMW dealer so thought the tyre sizes were ok, its just that all other Zeds I have seen have had wider tyres on the rear.
Tbone, Thanks for info on the tyres you are thinking of.
Mr Tidy, I wasn't sure that the pressures on the rear might have come down as there is less rubber on the road.
Busterboo, I have been running snow tyres on another set of wheels and they were far more comfortable that is why I thought of going for normal tyres.
Essex Zed, I bought my car from a BMW dealer so thought the tyre sizes were ok, its just that all other Zeds I have seen have had wider tyres on the rear.
Tbone, Thanks for info on the tyres you are thinking of.
- Nictrix
- Lifer
- Posts: 5451
- Joined: Mon Aug 18, 2014 9:59 pm
- Location: Paisley
Tyres
With it being 17" wheels you have you may not have a staggered fitment and that will be why all your tyres are the same size.silverfox8 wrote: ↑Tue Apr 17, 2018 5:15 pm
Essex Zed, I bought my car from a BMW dealer so thought the tyre sizes were ok, its just that all other Zeds I have seen have had wider tyres on the rear.
E89 2014 35i M Sport Black with Black leather
Tyres
I looked at a 2010 Z4 brochure online and it seems the standard wheels offered on the 23i at that time were 17” Star Spoke style 290 and were 8J front and rear with 225/45 RF tyres all round, so if you have these wheels that would account for why you have the same size tyres front and rear.
The only other 17’s available then were the Turbine style 292 and these were 8.5J on the rear with 255/40 tyres.
The only other 17’s available then were the Turbine style 292 and these were 8.5J on the rear with 255/40 tyres.
-
- Newbie
- Posts: 8
- Joined: Sat Jan 27, 2018 1:34 pm
Tyres
Thanks Nictrix, Busterboo and EssexZed
That has helped a lot, I will stick with the 17's all round and move to non rf's next month.
Thank you all for your help.
That has helped a lot, I will stick with the 17's all round and move to non rf's next month.
Thank you all for your help.
-
- Member
- Posts: 63
- Joined: Thu Apr 06, 2017 6:49 pm
Tyres
Any know if : 255/35R19 will fit on the rear without rubbing? All tyre purchase companies suggest 255/ 30 r 19 but if I can get some extra side wall I would for comfort.
- mr wilks
- Legend
- Posts: 21897
- Joined: Wed Jul 04, 2012 10:02 pm
- Location: Lancashire
Tyres
Assuming 9.5j & not a ridiculous offset then no problem at all , lots of clearance with increased wheel protection & ride comfort .Arcade.Eyes wrote: ↑Wed Apr 18, 2018 8:02 pm Any know if : 255/35R19 will fit on the rear without rubbing? All tyre purchase companies suggest 255/ 30 r 19 but if I can get some extra side wall I would for comfort.
I always go 255 35 on 19s , no reason not to
- Attachments
-
- 20180302_151136-01.jpeg (311.74 KiB) Viewed 1419 times
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
-
- Member
- Posts: 63
- Joined: Thu Apr 06, 2017 6:49 pm
Tyres
Cheers , I will do too then.
-
- Member
- Posts: 877
- Joined: Sun Apr 26, 2015 7:16 pm
Tyres
Mr Wilks, what size do you suggest for the fronts?mr wilks wrote: ↑Wed Apr 18, 2018 8:13 pmAssuming 9.5j & not a ridiculous offset then no problem at all , lots of clearance with increased wheel protection & ride comfort .Arcade.Eyes wrote: ↑Wed Apr 18, 2018 8:02 pm Any know if : 255/35R19 will fit on the rear without rubbing? All tyre purchase companies suggest 255/ 30 r 19 but if I can get some extra side wall I would for comfort.
I always go 255 35 on 19s , no reason not to