New run flat tyres required
Discussion
Anyone got any recent experience with run flats? Which are worth going for?
I've heard the technology has improved in recent years. I have also considered switching to regular tyres but the lack of a spare is a worry.
I'm also trying to get my head around load ratings. My car seems to have 96y, so does that mean the lowest load rating I can have is 96? I've seen some cheap pirellis that are 100y and XL. Not sure I need XL but most tyres this size seem to be xl.
I'm looking at replacing the fronts 245/45/18, and then the rears later in year 275/40/18.
I've heard the technology has improved in recent years. I have also considered switching to regular tyres but the lack of a spare is a worry.
I'm also trying to get my head around load ratings. My car seems to have 96y, so does that mean the lowest load rating I can have is 96? I've seen some cheap pirellis that are 100y and XL. Not sure I need XL but most tyres this size seem to be xl.
I'm looking at replacing the fronts 245/45/18, and then the rears later in year 275/40/18.
Hi im going back to runflats coming up to end of PCP etc Did a lot of research and asking around on forums FWIW to me the best out there for noise handling etc seems to be the Good Year FI assymetric 3,,,it will be with trepidation that I do not replace my Normal Michelin Pilots ....if I come out the Tyre place and start crash crash and get that horrible howling noise on the Motorway that my Bridgestones did on my new 64 plate I will be not a happy bunny
I've got ContiSport 3 run flats on my 118i - no problem, much prefer runflats as this car was setup with them in mind. Plus my wife drives it more for longer journeys with the kids so an extra safety net encase of issues she can get to services without needing to be on the hard-shoulder.
I've also got ContiWinterContact winter runflats too.
I've also got ContiWinterContact winter runflats too.
I am a big fan of good years, I had the eagle 3 on my Audi non run flat. I would try them on the beamer but looks like they are 200 quid each.
The pirelli p7 and Bridgestone driveguard are around 150 a corner.
Only problem with Bridgestone is they don't do my rears in that size. So I will need another brand on rear when I come to replace those.
The driveguard are apparently brilliant.
The pirelli p7 and Bridgestone driveguard are around 150 a corner.
Only problem with Bridgestone is they don't do my rears in that size. So I will need another brand on rear when I come to replace those.
The driveguard are apparently brilliant.
Ok I've had some strange advise.
I spoke to Costco tyres to see their price on the drive guard. They told me that they are run flat tyres designed to be fitted to wheels that are not run flat wheels. And that if the car is designed for run flats then the driveguard run flats are not suitable.
Very very strange. If that's the case then I'm back to looking at pirelli
Best price I've found is 137 per tyre from halfords. Bargain.
I spoke to Costco tyres to see their price on the drive guard. They told me that they are run flat tyres designed to be fitted to wheels that are not run flat wheels. And that if the car is designed for run flats then the driveguard run flats are not suitable.
Very very strange. If that's the case then I'm back to looking at pirelli
Best price I've found is 137 per tyre from halfords. Bargain.
Benjijames28 said:
Ok I've had some strange advise.
I spoke to Costco tyres to see their price on the drive guard. They told me that they are run flat tyres designed to be fitted to wheels that are not run flat wheels. And that if the car is designed for run flats then the driveguard run flats are not suitable.
Very very strange. If that's the case then I'm back to looking at pirelli
Best price I've found is 137 per tyre from halfords. Bargain.
I spoke to Costco tyres to see their price on the drive guard. They told me that they are run flat tyres designed to be fitted to wheels that are not run flat wheels. And that if the car is designed for run flats then the driveguard run flats are not suitable.
Very very strange. If that's the case then I'm back to looking at pirelli
Best price I've found is 137 per tyre from halfords. Bargain.
Strange. Wouldn't surprise me if they were shying away from fitting RFTs at all because they've been damaging rims.
There could be an argument for not fitting an RFT to an unknown or budget rim which might not take the extra loads that it may be asked to, but not the other way around.
Quality rims that have had RFTs fitted will take any type of tyre, in terms of RFT or non RFT.
Benjijames28 said:
... drive guard. They told me that they are run flat tyres designed to be fitted to wheels that are not run flat wheels. And that if the car is designed for run flats then the driveguard run flats are not suitable.
Is that legal? I thought that there is a requirement that when runflat tyres are fitted there must be a warning system to tell the driver when a tyre is deflated, otherwise he might continue at full speed and cause an accident.Locknut said:
Is that legal? I thought that there is a requirement that when runflat tyres are fitted there must be a warning system to tell the driver when a tyre is deflated, otherwise he might continue at full speed and cause an accident.
Many cars without runflat tyres have a tyre pressure warning system - infact its a legal requirement on all new cars now irrespective of tyre type.I've read so many threads about the RFT v non-RFT debate!
Many swear changing to non-RFTs has transformed their car (plus they are a lot cheaper) and you are much less likely to suffer cracked rims.
But there is the issue of no spare and reliance on a compressor and a can of goo - plus if the OH uses the car there is no wheel-change performance (which I wouldn't be too keen doing on a hard shoulder if it was a flat on the offside).
I've had BMWs with both (and currently got one of each) but I think when my Z4 needs tyres I will be going non-RFT, as much as anything to see if there really is a difference - the Bridgestone RFTs on it seem to have no give in them at all. (And I recently managed to get a space-saver and jack as a Plan B)!
By contrast the Pirelli RFTs I had on my 1 Series didn't seem too bad.
But OP one thing I have read is that you really don't want 2 of each - either stick with RFTs or change them all!
Many swear changing to non-RFTs has transformed their car (plus they are a lot cheaper) and you are much less likely to suffer cracked rims.
But there is the issue of no spare and reliance on a compressor and a can of goo - plus if the OH uses the car there is no wheel-change performance (which I wouldn't be too keen doing on a hard shoulder if it was a flat on the offside).
I've had BMWs with both (and currently got one of each) but I think when my Z4 needs tyres I will be going non-RFT, as much as anything to see if there really is a difference - the Bridgestone RFTs on it seem to have no give in them at all. (And I recently managed to get a space-saver and jack as a Plan B)!
By contrast the Pirelli RFTs I had on my 1 Series didn't seem too bad.
But OP one thing I have read is that you really don't want 2 of each - either stick with RFTs or change them all!
New 335d Pirelli Run flats Pzero, 225/40 R19 89Y front and 255/35 R19 92Y rears, with standard suspension. I prefer to run them nearer 2.9 bar all round rather than 2.6 I have found them OK for grip, noise, comfort. I have done 8000 miles and tread is down by 1.5mm to 2mm. Front and rear swearing at about the same rate.
jon- said:
Eddieslofart said:
Just a bit left field, RFT on the X5, got 35000 before the canvas came through on the inner wall.
Non RFT, 27000 before the same. Same user scope.
I'm not sure what you're getting at with this? Can you elaborate?Non RFT, 27000 before the same. Same user scope.
Eddieslofart said:
jon- said:
Eddieslofart said:
Just a bit left field, RFT on the X5, got 35000 before the canvas came through on the inner wall.
Non RFT, 27000 before the same. Same user scope.
I'm not sure what you're getting at with this? Can you elaborate?Non RFT, 27000 before the same. Same user scope.
As for the OP, in my experience the RFTs have not come on at all. We've a '12 plate 1 series with the MSport adaptive suspension and it's a truly awful ride. Currently on 18" F1s at the rear and Conti SC3 at the front. If it were my car (not the wife's) I'd be switching to non-RFT asap. I dread to think how much extra unsprung weight it's having to deal with.
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