Run-Flats ? Repair or Change

[eldwin]

Re: Run-Flats ? Repair or Change

Jase,
Mine does not come with the spare tire as well. You can always buy things like that Airman that can pump + seal tyre in the case of a puncture.

This is safe and very safe. Some of the Merc model does not come with spare tire as well and they also dont use RF because of such similar pump.

Thanks Eldwin. Your suggestion makes fantastic sense. The problem which I face is that my E90 doesn't have a slot for an extra car tyre which means that I'm kinda stuck with RFTs for a while I like the idea of having RFTs but am conscious of the costs. I'm not aware of the slipping problem though - this sounds quite nasty. My RFTs have quite good grip on carpark surfaces but then again, I've not tried it when it's wet etc.

 

[Jase]

Re: Run-Flats ? Repair or Change

Cool, thanks eldwin. That sounds like a more viable and cheaper alternative.

I'll examine the option when my RFTs need to be changed. For the moment, they're very new so no problems.

 

[Ahbengdriver]

Re: Run-Flats ? Repair or Change

I have 4 x 16inch OEM runflat tyres, which is still on the OEM rims. If anyone wants a replacement in future, can contact me then and I may wanna sell them. Only done like 7,000km on them.

 

[silverfish]

Re: Run-Flats ? Repair or Change

I had a puncture on my 523 and PML said to change the whole tire. I refused and got it patched at Stamford Tyre for $6. That lasted well until the tire botak and I just switched to 4 continental normal tires. Now the ride is far more comfortable. Can anyone suggest where I can buy a spray can thingy to fill up the air in the event I kenna puncture again? I dread having a spare tire in the boot.

 

[sgkew]

Re: Run-Flats ? Repair or Change

may i know where i can find my 17" RFT, anybody know which is the cheaper in town?

 

[delrosa81]

Re: Run-Flats ? Repair or Change

Can anyone confirm the price of standard 16" RFTs? I'm just curious cause I was told that it goes as high as $500 per piece.

Hi Bro,

Im at PML now to fix my RFT, got a nail and they asked me to replace. Costs 287 per piece after discount.......16inch 320i OEM tyres. Shit, now then I know can be patched man....heartpain to spend money on rubbers only after 3 weeks I got delivery of my vehicle. .....Sigh....

 

[Be My Woman]

Re: Run-Flats ? Repair or Change

I read from a website that changing to normal from RFTs is not ideal as manufacturers incorporate this into the design of their suspensions.

Will this spoil the suspension?

 

[delrosa81]

Re: Run-Flats ? Repair or Change

I read from a website that changing to normal from RFTs is not ideal as manufacturers incorporate this into the design of their suspensions.

Will this spoil the suspension?

Hmm yeah I heard bout this as well, Im not too sure whether it would spoil the suspension anot but I do know that the suspension is a wear and tear item, it would break down sooner than it was initially designed for I guess but I wish it would break down faster so I can change to Bilstein or Koni FSD Shocks to couple with my current Eibach Springs. heehee No issues one bro.

 

[Henry1515]

Re: Run-Flats ? Repair or Change

Is about time to change my PS2. I heard Goodyear or Bridgestone are better and cheaper too. What about CS2? Can anyone advise me? And where should I go to purchase? Mine is 18" stragged. Thanks.

 

[Be My Woman]

Re: Run-Flats ? Repair or Change

Hmm yeah I heard bout this as well, Im not too sure whether it would spoil the suspension anot but I do know that the suspension is a wear and tear item, it would break down sooner than it was initially designed for I guess but I wish it would break down faster so I can change to Bilstein or Koni FSD Shocks to couple with my current Eibach Springs. heehee No issues one bro.

Thanks, bro!...That makes sense.

 

[remus7777]

Re: Run-Flats ? Repair or Change

The run flats has very stiff side walls to keep some tire height even though there is no air. Patching will not degrade the run flat performance. "Tire Specialists" is very subjective matter. There is basically 3 methods to patch a tire:

1. Insertion of a sticky rubber thread about 5mm in diameter and 10cm long through the puncture. This is done from the outside and the man will stand over the tire and use a T shaped tool to push the repair material through.

2. Rubber plug method. This uses a round rubber plug that has a "head". The plug is inserted into a gun shaped tool which has a hollow tip. The tip is pushed through the puncture and the tool squeezes the "head" out. The tool is withdrawn and this leaves the plug in place.

3. Interior patching. The tire is removed from the rim and the inside surface is prepared by light grinding. Some rubber cement is applied and a vulcanising patch is adhered. The area is sometimes heated to completed the curing process.

Needless to say the interior patching is the best as high speed cruising seals the area better compared to the 1st and 2nd methods which may leak due to centrifugal forces.

Cheers

Dr yky... of course i remember you. First 7 series oil change at UM2. So far your car is still the fastest coming down the hoist. Hmm funny that you get no throttle response improvement. There is another member in the forum that used the plugs in his 730. Well continue to monitor your car and let us know.

Thanks

Thanks for the informative sharing on the 3 ways of method. Read too late. Just got my Run Flat Tyre for E90 repaired using method 1 if I am not wrong. The question is this sufficient or I still need to use method 3 for internal patching which is more full proof I should say base on what you shared?

Many Thanks!!

 

[roberttan]

Re: Run-Flats ? Repair or Change

menber yendor thanks for sharing yr view, i want to add 1 opinion is the first 2 method of repair does not ensure is the tyre safe to put back for service after the reapired ? so is very important to have the punctured tyre thoroughly(especially inside) checked and repair,i would say the rational is not only to seal the HOLE, is is it safe to re-use the repaired tyre, so as for PML advice no repair of RFT ,my personal opinion is they cannot assure how safe the rapaired is so just tell you cannot, as you should know in their book that is no such word REPAIR only CHANGE,please dont blame them they have to make sure 100 and 1 % safety of the car,
so my last advice just make sure you know what you are doing and dont blame others if it does not turn out to be your expectation.thanks

 

[miniconvert]

Re: Run-Flats ? Repair or Change

Wonder why are there so many nails and screws around Singapore these days... been driving for 8 years, nails and punctures were never a problem... until the past 8 mths, my Mini got hit 3 times and most recently, my E60 prompted me today that there's a puncture... arghhhhh.... hopefully can get it repaired this time...

 

[Ascentsia8855]

Re: Run-Flats ? Repair or Change

RF tires are costly to repair. Got my E93 last year. 1 month into ownership and I was hit by nails. Naturally PML will tell you to replace. So did a replacement. Costs me $550. Last week got hit again. Same side - passenger side rear tire. This time enough is enough. I went to shop at Killiney to get it fixed using method 3 and paid $20. The shop should assist you in making a decision as to whether to repair or replace.

 

[adrian26]

Re: Run-Flats ? Repair or Change

The problem is that nowadays there are a lot more road construction works going on. When driving around Singapore, there is at least one or two roadworks going on every 1km. Plus all the en bloc and new building construction means that lorries drive everywhere and drop bits and pieces all over the place.

 

[CN2107]

Re: Run-Flats ? Repair or Change

Sorry to hijack this thread for a quick question on run flat tyres. I was quoted $550 for a RF tyre for my 630, is this reasonable? And i read that we do not need to change back to normal tyres for our cars? Apologies to the thread owner for using this lead..
thx...!

 

[cyrus271]

Re: Run-Flats ? Repair or Change

Just kena nail on my RFTs last night - didn't bother with PML and went straight to the Killiney Rd shop to repair this morning. Now just hope the tyre sensor won't sound when I go to my car later

 

[heerajs]

Re: Run-Flats ? Repair or Change

Just kena nail on my RFTs last night - didn't bother with PML and went straight to the Killiney Rd shop to repair this morning. Now just hope the tyre sensor won't sound when I go to my car later

Bro u can reset the sensors.Just refer to your Car's manual

 

[cyrus271]

Re: Run-Flats ? Repair or Change

Yah I know about the reset.

I meant, I hope there's no more air leak from the tire to trigger the sensor. Cos the shop guy did a "drip water" test on the mended rubber, and there was still a tiny air bubble... but advised me to monitor and see. Am ok with that, cos the alternative is to spend 500 bucks on a new tire!

 

[Darien T]

Re: Run-Flats ? Repair or Change

Hi guys,

Had my first flat tire on the run flats last week.

The warning came on the idrive and i drove on for quite a bit as the ride was not compromised in any way.

Called the service people who advised me to pump air back into the tire to find out if it might be a false alarm.

All was well but the next day, the warning indicator came on again, confirming that it is a real puncture.

Following that I simply paid a couple of bucks and patched it up the usual way at one of them tire shops.

Alls well again.

Theoretically, it really should not affect the run flats and the run flat system.

In fact, I was pretty happy with the run flats as my night / day was not ruined just cos of a simple puncture! I could drive on and not worry about my tires will I patch them up at a more convenient time.

Of course, we shouldn't drive on forever but it was brilliant actually!