Run-Flat Tyres on Octy II

Burnsey · 26-04-2008, 23:39

Hi

Was browsing Kwik fit website and it suggests BridgeStone and Goodyear run flat tyres are compatible with the Octavia wheel size - 205/55v16

Other than price what do you think the pro's and con's are of using them?

Has anyone actually used them, either on the Octavia or other vehicle?

Cheers

Babs · 26-04-2008, 23:46

No no no no no!

Lady Elanore · 26-04-2008, 23:49

I have run flats on my 1 series and they are a ride wrecker. The Octavia will not be set up for these very hard riding tyres and you will need to keep a Chiropractor on retainer if you could fit these tyres. Which I doubt you can as you should need special rims to put them on too. I haven’t heard of any way round this as yet.

gmac · 28-04-2008, 15:12

You can only fit run-flats if you have a tyre pressure monitoring system. However a far as wheels they will fit on standard alloys - they are a fair bit harder than normal tyres though, so if you find your ride hard or firm then they may not be to your taste.

Lady Elanore · 28-04-2008, 16:24

Quote:

Originally Posted by gmac

You can only fit run-flats if you have a tyre pressure monitoring system. However a far as wheels they will fit on standard alloys - they are a fair bit harder than normal tyres though, so if you find your ride hard or firm then they may not be to your taste.

The ones that BVMW use will not fit ordinary wheels as the rims will not keep the tyre in place at speed. I didn’t know anyone did them to fit standard rims, must say I am very surprised they fit safely.

They are also very very difficult to get onto a rim, so it's important to check your rims before and after fitting.

cheezemonkhai · 28-04-2008, 22:53

Quote:

Originally Posted by Lady Elanore

I have run flats on my 1 series and they are a ride wrecker. The Octavia will not be set up for these very hard riding tyres and you will need to keep a Chiropractor on retainer if you could fit these tyres. Which I doubt you can as you should need special rims to put them on too. I haven’t heard of any way round this as yet.

You can get plenty of run flats for normal rims. IIRC the BMW ones are on "standard" rims.

Lady Elanore · 28-04-2008, 22:55

Quote:

Originally Posted by cheezemonkhai

You can get plenty of run flats for normal rims. IIRC the BMW ones are on "standard" rims.

Nope BMW wheels are designed for run-flats (,ind you they only do run-flats on the 1 series). There is a diagram somewhere showing how the rim is different for Run Flats. I think the lip is slightly taller and the inside has a slightly different profile.

I seriously doubt you can put run-flats on normal cars and expect them to be very safe if they run flat.

Lady Elanore · 28-04-2008, 23:14

I have had a bit of a trawl and can’t find the diagrams showing subtle differences between standard rims and run-flat ones. I do remember seeing cross sections of BMW rims when they first came out. BMW recommend that you use the correct rims for run-flats however and have also (allegedly

) adjusted their suspension settings to take into consideration the 40psi approx of pressure they have in them. Also, theoretically, your insurance company should be informed if you change to this type. Also, don't forget you need a specialist to fit them if you want your rim left intact.

gadgetman · 29-04-2008, 15:42

Either way the tyres basically toast, so why pay the extra cost?

IIRC they arent much better against a blow-out failure either. Recall a youtube vid on it.

cheezemonkhai · 29-04-2008, 17:51

Quote:

Originally Posted by Lady Elanore

Nope BMW wheels are designed for run-flats (,ind you they only do run-flats on the 1 series). There is a diagram somewhere showing how the rim is different for Run Flats. I think the lip is slightly taller and the inside has a slightly different profile.

I seriously doubt you can put run-flats on normal cars and expect them to be very safe if they run flat.

I'm 100% sure you can put run flats on normal cars as I was speaking to a few major tyre places and even one of the manufacturers stated they did versions that were designed to go on standard rims.

I was considering if they were worth it at the time, but decided they were not for the reasons you gave.

They are much stiffer, but IIRC some are made.

Run flat tres, Tyre review

FWIW i'd double cheack all of what i've said before going ahead just incase my info is out of date.

Lady Elanore · 30-04-2008, 00:12

I have already had a puncture and only done 7K miles. The dealer bodged a repair till had the tyre replaced (yes I know it was naughty).

Autocar wondered about replacing the run-flats on their 135, but were told they could not, as the rim is specific to run flats i.e. it has a different profile.

I personally would not have them if they weren’t standard when I got the car. Besides if you add them to an ordinary car you then get into the trouble with spring/damper rates being all wrong, the tyres potentially are heavier which affect the unsprung mass and there are 2 schools of thought as to whether they are more fuel efficient and offer better grip in the wet, or just the opposite. They do save the weight of an extra spare wheel however

26-04-2008, 23:39	#1
Burnsey Briskodian Join Date: Oct 2005 Location: GLASGOW Posts: 399 Thanks: 13 Thanked 17 Times in 17 Posts	Run-Flat Tyres on Octy II Hi Was browsing Kwik fit website and it suggests BridgeStone and Goodyear run flat tyres are compatible with the Octavia wheel size - 205/55v16 Other than price what do you think the pro's and con's are of using them? Has anyone actually used them, either on the Octavia or other vehicle? Cheers __________________ Burnsey 1.9 tdi Octy II elegance estate (gone but not forgotten... 2.5v6tdi Superb, MkI Octy 1.6)

26-04-2008, 23:46	#2
Babs Briskodian Join Date: Jul 2006 Location: Newport/Preston Posts: 3,958 Thanks: 164 Thanked 125 Times in 111 Posts	Re: Run-Flat Tyres on Octy II No no no no no! __________________ - Andrew Octavia For Sale!

26-04-2008, 23:49	#3
Lady Elanore Geordie Lass Join Date: Oct 2005 Location: in the ceiling watching you..... Posts: 10,241 Thanks: 214 Thanked 205 Times in 115 Posts	Re: Run-Flat Tyres on Octy II I have run flats on my 1 series and they are a ride wrecker. The Octavia will not be set up for these very hard riding tyres and you will need to keep a Chiropractor on retainer if you could fit these tyres. Which I doubt you can as you should need special rims to put them on too. I haven’t heard of any way round this as yet. __________________ . Amanda

28-04-2008, 15:12	#4
gmac Briskodian Join Date: Feb 2003 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Run-Flat Tyres on Octy II You can only fit run-flats if you have a tyre pressure monitoring system. However a far as wheels they will fit on standard alloys - they are a fair bit harder than normal tyres though, so if you find your ride hard or firm then they may not be to your taste.

28-04-2008, 23:14	#8
Lady Elanore Geordie Lass Join Date: Oct 2005 Location: in the ceiling watching you..... Posts: 10,241 Thanks: 214 Thanked 205 Times in 115 Posts	Re: Run-Flat Tyres on Octy II I have had a bit of a trawl and can’t find the diagrams showing subtle differences between standard rims and run-flat ones. I do remember seeing cross sections of BMW rims when they first came out. BMW recommend that you use the correct rims for run-flats however and have also (allegedly) adjusted their suspension settings to take into consideration the 40psi approx of pressure they have in them. Also, theoretically, your insurance company should be informed if you change to this type. Also, don't forget you need a specialist to fit them if you want your rim left intact. __________________ . Amanda

29-04-2008, 15:42	#9
gadgetman Go Gadget Octy! Join Date: Apr 2007 Posts: 2,904 Thanks: 150 Thanked 91 Times in 84 Posts	Re: Run-Flat Tyres on Octy II Either way the tyres basically toast, so why pay the extra cost? IIRC they arent much better against a blow-out failure either. Recall a youtube vid on it. __________________ Lick the window of life Why not join the Briskoda Last.fm group?

30-04-2008, 00:12	#11
Lady Elanore Geordie Lass Join Date: Oct 2005 Location: in the ceiling watching you..... Posts: 10,241 Thanks: 214 Thanked 205 Times in 115 Posts	Re: Run-Flat Tyres on Octy II I have already had a puncture and only done 7K miles. The dealer bodged a repair till had the tyre replaced (yes I know it was naughty). Autocar wondered about replacing the run-flats on their 135, but were told they could not, as the rim is specific to run flats i.e. it has a different profile. I personally would not have them if they weren’t standard when I got the car. Besides if you add them to an ordinary car you then get into the trouble with spring/damper rates being all wrong, the tyres potentially are heavier which affect the unsprung mass and there are 2 schools of thought as to whether they are more fuel efficient and offer better grip in the wet, or just the opposite. They do save the weight of an extra spare wheel however __________________ . Amanda

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