Mini Cooper S - Flat runs to normal? - MINI Cooper Forum
Go Back   MINI Cooper Forum > MINI Technical Forums > Wheels, Tyres & Brakes


Wheels, Tyres & Brakes
Find Sponsor products associated with this forum
For (almost) all things alloy, steel and rubber, plus upgrading your MINI's stopping ability

Sponsored by:

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
Similar Threads
Thread Thread Starter Forum Replies Last Post
New 14 plate Mini Cooper SD Coupe Nightmare Kickboxkel Welcome New Members 6 May 21st, 2014 10:06 AM
Mini Cooper S Seat Heater Fire Paul.Armstrong First Generation Faults & Fixes 0 Apr 29th, 2014 02:08 PM
2014 MINI Cooper Hardtop Revealed AutoGuide.com MINI News 12 Feb 12th, 2014 02:12 PM
Brooklands Mini Day Sunday, March 24, 2013 mab01uk Mini Events 11 Apr 5th, 2013 06:11 PM
Mini cooper s r53 37,000 using oil is this normal leedslad Maintenance & MINI Care 11 Feb 4th, 2013 10:26 PM

 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Jun 20th, 2014, 12:45 PM
emmajsx
Offline
 
Join Date: Jun 2014
Posts: 2
Local Time: 01:51 PM
United Kingdom
Mini Cooper S - Flat runs to normal?

Hi, this is probably a really stupid question, but is it possible to change the run flat tyres on my 07 plate Mini Cooper S to normal tyres of the same size? There's probably already a tonne of threads for this on here but I'm new to this and obviously too stupid to work it, so if anyone could point me in the right direction that would be great, thanks! Emma

P.s. I realise I put flat runs instead of run flats in the title :|
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Jun 20th, 2014, 12:57 PM
MINI2 Regular
Offline
 
Join Date: Feb 2010
Location: cambridge
Posts: 286
Local Time: 01:51 PM
United Kingdom Male
http://bit.ly/Umsa9P
Reply With Quote
  #3 (permalink)  
Old Jun 20th, 2014, 01:33 PM
emmajsx
Offline
 
Join Date: Jun 2014
Posts: 2
Local Time: 01:51 PM
United Kingdom
Surely your very helpful comment applies to all threads on this forum then as I'm sure Google has the answer to everything?
Reply With Quote
  #4 (permalink)  
Old Jun 20th, 2014, 03:58 PM
MINI2 Master
Offline
 
Join Date: Feb 2011
Location: South london
Posts: 1,190
Local Time: 01:51 PM
United Kingdom Male
Quote: Originally Posted by emmajsx (original)
Hi, this is probably a really stupid question, but is it possible to change the run flat tyres on my 07 plate Mini Cooper S to normal tyres of the same size? There's probably already a tonne of threads for this on here but I'm new to this and obviously too stupid to work it, so if anyone could point me in the right direction that would be great, thanks! Emma

P.s. I realise I put flat runs instead of run flats in the title :|

Hi Emma

Yes You can change to non run flats not a problem,
As you say stick to the same size you will be fine.
Most guys carry a can of tire wield/repair in the boot Incase you get a flat, you can get this from halfords.

Don't mix RF with non RF tires and when you get your tires fitted make shore you reset you tire pressure monitor system,

Hope this helps
Reply With Quote
  #5 (permalink)  
Old Jun 20th, 2014, 04:22 PM
MINI2 Regular
Offline
 
Join Date: Nov 2010
Location: Nicosia, Cyprus
Posts: 58
Local Time: 01:51 PM
Cyprus Male
Yes you most definitely can and you will notice a huge difference on the ride quality. Just make sure you check your tyre pressure more often than you did with run-flats, as normal tyres do tend to loose pressure faster than the run-flats.
Reply With Quote
  #6 (permalink)  
Old Jun 27th, 2014, 08:21 PM
MINI2 Newbie
Offline
 
Join Date: Mar 2008
Posts: 28
Local Time: 01:51 PM
United Kingdom Male
But in the interests of full disclosure...

People who know far more than me about tyres and wheels tell me that current Run Flat spec models are shipped with EH2 alloy wheels (Extended Hump 2) which is a lip on the outside of the rim that keep a run flat attached in the event of a puncture.

A conventional tyre is, I am told, perfectly safe on a run flat alloy up until the moment of a blow out when the aforementioned lip could make a NRF tyre potentionally more prone to consciously uncoupling itself from your wheel.

Makes no odds to me as my feels are flat spotted, the shape of 50p pieces, near cracking and generally knackered bar my off-side rear so I'm going to get new alloys to go with my new NRF rubber when the time comes since they're shot.

This isn't my opinion, just what I am told and what I've read and I'm sure I know less than many people on here. I would just try to gather some info from maybe a smaller garage, a Mini main dealer, and a few bigger tyre places, and when they tell you something different to what you've heard elsewhere, put it to them.

There are different opinions depending on who you ask, and they can't all be right. But if there is a chance it's less safe, I'd rather know about it and then make my judgement with that in my mind. It's probably a small chance.

But then again, thanks to run flat tyres, Cooper S suspensions, and chronic pot-holed roads I was driving around on a completely cracked alloy for God knows how many months - and that can't have been that safe!

I just wish there was some definitive answer. But at less than 400 sheets for some 17" alloys that don't look like Wolfrace budget specials from places like Wheelbase and such (I don't work for them!) it's not much of a dent to have it looking a bit tasty with something in gun metal grey and to your taste as I find the Mini wheels all look a bit chronic - especially at the ridiculous prices they charge to replace 17" Flames like I have.

So in short, no answers here, but it might be worth consulting a wider field of opinions rather than just saying sling them on. I have read (unvalidated potentially manufactured and elaborated horror stories, admittedly) that if you put conventional rubber on a car made for RFT you need to notify your insurer about it.

Some insurers then ask if they are going on the OEM alloy originally made to take RFT tyres and demand you get a letter from BMW saying this is OK, and BMW say you can run a NRF tyres on the car, but only on a NRF alloy without the EH2 lip.

Like I say - before I get shot down(!) - this is just what I've read, heard and been told and I'm just giving you the "benefit" of my advanced state of confusion on the matter!

But for the sake of 400 snots, I'd buy myself some cheapo but OK-looking after-market alloys.

Cheerio...
Reply With Quote
  #7 (permalink)  
Old Jun 28th, 2014, 11:00 AM
MINI2 Master
Offline
 
Join Date: Mar 2009
Location: Tyneside
Posts: 1,173
Local Time: 12:51 PM
United Kingdom
As you do say, you may be repeating nonsense - the benefit of the internet is that you can read stuff at home that you used to have to stand next to a drunk bloke in the pub to hear.....

A comparison between H2 (ordinary, in red) and EH2 (fun-flat, in blue) rim profiles is shown below from a SEAT workshop manual:



You can see that the wider seat and hump on the EH2 rim makes it harder for a deflated tyre bead to fall off. Not impossible, but less likely to happen than on an ordinary rim.

So a non-runflat tyre on a runflat rim will only be a little safer than all the other cars than have non-runflat tyres.

And remember, runflat tyres offer absolutely no protection from attack by either tigers or sharks - you may be lulled into a false sense of security by all this talk of safety and then find you are completely and utterly vulnerable to shark/tiger attack.
Attached Thumbnails
Click image for larger version

Name:	eh2-v-h2 rim.png
Views:	1020
Size:	3.4 KB
ID:	176049  
Reply With Quote
  #8 (permalink)  
Old Jun 28th, 2014, 01:56 PM
MINI2 Newbie
Offline
 
Join Date: Mar 2008
Posts: 28
Local Time: 01:51 PM
United Kingdom Male
Woah...

Absolutely no protection against tigers? Hell's bells.

Well they aren't the conditions under which I bought the car. What's Anne Robinson's number?

Well, if nothing else my piece did get that comprehensive response which cleared a few things up in my mind, anyway!

Plus I've had reason to have a BMW Assist chap out today for an entirely different mechanical matter, but put the question to him and he said it was perfectly safe to put conventional rubber on an EH2 rim.

And thinking about it, in terms of notifying your insurer about it, who's to say it didn't have conventional rubber on when you bought it.

As I say, I have to get some new wheels as mine are mullered anyway, and MINI rims are way too dear and cr@p-looking and I'll no doubt have to replace at least one corner of my next set due to the roads around here! Any recommendations for the sub-£500 a set region? And are there a specific few NRF tyre that runs well on a R56 MCS?

Wheel-wise I've been looking at some Inovit KE10s in gun-metal grey or something of that ilk. It's always hard guessing what would look nice in situ.

Apologies if these have been handled well elsewhere.

Cheers to the previous poster for their addition - good points well (and charmingly) made!
Reply With Quote
  #9 (permalink)  
Old Sep 13th, 2014, 09:10 AM
MINI2 Newbie
Offline
 
Join Date: Sep 2014
Posts: 1
Local Time: 12:51 PM
China
There are different opinions depending on who you ask, and they can't all be right. But if there is a chance it's less safe, I'd rather know about it and then make my judgement with that in my mind. It's probably a small chance.
Reply With Quote
  #10 (permalink)  
Old Sep 18th, 2014, 09:55 PM
MINI2 Regular
Offline
 
Join Date: Oct 2012
Location: Wirral
Posts: 63
Local Time: 01:51 PM
United Kingdom Male
The illustration just shows it's more about the effect on the rim from the tyre rather than the effect on the tyre from the rim, they had to strengthen the rim, in which case, using non rft's cannot be a detriment to safety of the rim.

Some dealers are telling customers the suspension has been calibrated for use with rft's and they should not be swapped for non. Swapping away from rft's will change the suspension feel due to the sidewall or carcass strength anyway. I think the (firmer if at all) suspension from a rft car is complimented by non rft tyres, which maybe is why so many are overly pleased?

Who knows, but not all BMW cars have rft tyres, so I don't believe what the dealers say, the staff just don't know what to say I suspect, as they are not allowed to express their own opinion in case one of us holds them responsible for something, they have some sort of dealer approved ******** to state.

I like the idea of tyres staying up, but I do not like the crashing suspension feel or the stupid price hike, my car drives so much better without them.
Reply With Quote
Sponsored Links
Advertisement
 
Reply
Tags: , , , ,



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
New 14 plate Mini Cooper SD Coupe Nightmare Kickboxkel Welcome New Members 6 May 21st, 2014 10:06 AM
Mini Cooper S Seat Heater Fire Paul.Armstrong First Generation Faults & Fixes 0 Apr 29th, 2014 02:08 PM
2014 MINI Cooper Hardtop Revealed AutoGuide.com MINI News 12 Feb 12th, 2014 02:12 PM
Brooklands Mini Day Sunday, March 24, 2013 mab01uk Mini Events 11 Apr 5th, 2013 06:11 PM
Mini cooper s r53 37,000 using oil is this normal leedslad Maintenance & MINI Care 11 Feb 4th, 2013 10:26 PM

» Recent Threads
The Importance of Winter Wiper Blades and Glass Treatment
Today 12:32 PM
by CARiD
Last post by CARiD
Today 12:32 PM
0 Replies, 1 Views
How can I remove the bonnet lining?
Today 12:26 PM
by gnjames
Last post by gnjames
Today 12:26 PM
0 Replies, 1 Views
mini one 2008 cigarette lighter fuse?!
Today 12:12 PM
Last post by lucyebbs
Today 12:12 PM
0 Replies, 1 Views
Thinking about another Mini
Today 11:56 AM
by ZR 900
Last post by ZR 900
Today 11:56 AM
0 Replies, 1 Views
bolt on bhp
Yesterday 04:08 PM
Last post by james essex
Today 11:49 AM
3 Replies, 223 Views
Advice on labour charge for fast fix....
Today 10:48 AM
Last post by peteski2014
Today 11:42 AM
2 Replies, 40 Views
2015 Countryman
Yesterday 09:15 PM
Last post by The Nun
Today 09:33 AM
1 Replies, 137 Views
Thinking about buying a 09 Mini Cooper S
Today 05:16 AM
by JNH2358
Last post by JNH2358
Today 05:16 AM
0 Replies, 93 Views
Issue with mini 2005 convertible roof
Oct 29th, 2014 03:16 PM
by boppu
Last post by burnstar
Today 05:12 AM
5 Replies, 412 Views
F56 how to get constant power from passenger side fuse box
Today 12:18 AM
Last post by skylight555
Today 12:18 AM
0 Replies, 113 Views
IMPORTANT. Have you had a power steering pump failure? Please vote YES or NO!!!
Jan 22nd, 2004 11:45 AM
by waynef
Last post by jowev
Yesterday 10:28 PM
1,112 Replies, 337,764 Views
What type of person drives a MCS
Oct 27th, 2006 02:14 PM
by popey
Last post by drmdtsap
Yesterday 08:38 PM
81 Replies, 4,215 Views
Fitting a Bugaboo in a Mini Cooper 2011
Yesterday 02:37 PM
Last post by nidawaseem
Yesterday 02:37 PM
0 Replies, 171 Views
New comer with some questions..
Oct 29th, 2014 01:31 AM
by mcoop
Last post by davidscott
Yesterday 11:47 AM
3 Replies, 407 Views
H7r vs factory xenon
Yesterday 10:59 AM
by Nickgo
Last post by Nickgo
Yesterday 10:59 AM
0 Replies, 155 Views
Central locking problem Locks then unlocks straight away
Oct 29th, 2014 02:45 PM
by Skitos
Last post by heathwebbo
Yesterday 07:12 AM
2 Replies, 273 Views
No power under 4000 rpm and hard start
Oct 29th, 2014 10:39 PM
Last post by burnstar
Yesterday 06:59 AM
1 Replies, 270 Views
Winter Tire Recommendation
Oct 29th, 2014 12:21 AM
by Jason04
Last post by cristo
Oct 29th, 2014 07:58 PM
1 Replies, 408 Views
loss of radio reception
Oct 28th, 2014 07:00 PM
by k3fus
Last post by k3fus
Oct 29th, 2014 07:43 PM
2 Replies, 398 Views
How do you actually know if you have heated wing mirrors?
Oct 14th, 2014 12:32 PM
Last post by mj2k
Oct 29th, 2014 07:39 PM
6 Replies, 779 Views
» Premium
» Auto Insurance
Ľ Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 12:51 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2