E92 RFT increased profile

MadMaxM1 · 10-15-2013, 03:08 PM

First post so be gentle but used the great advice on here over the last year about RFTs so want to give some feedback and get advice.

I made the mistake of just trying to replace rear RFT's when warning light came on and had it checked out at a cheap tyre garage. When they came to fit the tyres they found one of the 19" rear alloys was cracked. I arranged a visit to my local BMW garage and they did the tolerance test and replaced the wheel (and fitted the tyre) with no charge or quibble (refreshing).

So my driving is moderate (more driving miss daisy than madmax) - 70mph ish on the motorway without much cause for accelerating or braking and 15k later my rears are low of tread - guess where?

So I'm going to make the change to non-RFT XL's for ride improvement and some longevity.

This won't be my first time. I briefly ran RFT's on a beloved E46 (bought E92 alloys that came with RFT) and the ride was terrible mostly due to suspension not set up for them. Switched to non-RFT's (Uniroyals) and they were great - lasted for 40k until I sold the car and they still had plenty of tread left.

My current dilemma is about increased profile. Why not increase my 255 30 R19's from 30 to 35? My speedo is certainly towards the 5% over optimistic (satnav seems to confirm this) and service my car well before it's due - often change oil after 10k. I'm thinking that a slightly higher profile (clearly along with switching to RFT) will provide a little more give on the rims and save those seeming fragile alloys?

Thanks

djgandy · 10-15-2013, 03:41 PM

I thought of doing this too. I didn't in the end but I really think it would be worth it on the 19s

E92NeilH · 10-15-2013, 03:47 PM

I would stick with the original profile and just switch to the non RFT and get a compressor in the boot you would notice big difference. I couldn't wait to change mine to non RFT! Over priced crap and they don't ware evenly usually ware on the inside I cracked both my rear 19" wheels on mine

MadMaxM1 · 10-15-2013, 04:22 PM

Hmmm still temped by 35 profile

My 19" did crack when the tyre was quite worn on the inside - possibly the reason? I wonder how many have cracked when there is plenty of inside tread left?

Non-RFT wear evenly so may also help the cause - but given the amount of potholes want as much cushioning as possible.

Can't wait for the non-RFT first drive. Will go for the gerenally accepted Eagle F1's. I just won't accept the cost of annual rear tyre replacement for RFTs - a heavy premium for a sub-standard drive.

I've clocked maybe 450k miles on non-RFT's and been lucky enough to have zero punctures, clocked 50k on RFT's and had two punctures.

ukbeemerboy · 10-15-2013, 04:51 PM

Quote:

Originally Posted by MadMaxM1

Hmmm still temped by 35 profile

My 19" did crack when the tyre was quite worn on the inside - possibly the reason? I wonder how many have cracked when there is plenty of inside tread left?

Non-RFT wear evenly so may also help the cause - but given the amount of potholes want as much cushioning as possible.

Can't wait for the non-RFT first drive. Will go for the gerenally accepted Eagle F1's. I just won't accept the cost of annual rear tyre replacement for RFTs - a heavy premium for a sub-standard drive.

I've clocked maybe 450k miles on non-RFT's and been lucky enough to have zero punctures, clocked 50k on RFT's and had two punctures.

I wouldn't change the profile if I were you personally, the wheels will look odd on the car for one. As said switching to non RFT's will improve your ride. As for cracked wheels, this can be caused by running your pressures too low.

acerboo · 10-16-2013, 02:51 AM

what make are your rft's the bridgestones are crap I changed to Pirelli and they are worlds apart in terms of ride quality. rather than change the profile consider fitting 235 and 256

gaza01 · 10-16-2013, 03:03 AM

As acerboo said. That way u get a 'taller' tyre anyway and its a proven size on 19s for our cars. Its what most people run...incl me!

djgandy · 10-16-2013, 03:50 AM

Quote:

Originally Posted by gaza01

As acerboo said. That way u get a 'taller' tyre anyway and its a proven size on 19s for our cars. Its what most people run...incl me!

265 gives you 3mm of extra sidewall (<10%), it's not really much although I considered this too.

Going 255/35 gives you 13mm of extra sidewall. I don't know how it will look but 13mm is going to make a big difference.

ashmostro · 10-16-2013, 05:53 AM

Quote:

Originally Posted by acerboo

what make are your rft's the bridgestones are crap I changed to Pirelli and they are worlds apart in terms of ride quality. rather than change the profile consider fitting 235 and 256

Exactly what I was going to recommend, minus the dyslexia

MadMaxM1 · 02-25-2014, 04:07 PM

Update - replaced with profile of 30 rather than changing to 35 - thanks for advice. The non-RFT's do make a huge difference - so soft over uneaven surfaces and speed bumps. Still have RFT's on the front that have plenty of tread so will wait a little longer for the full experience.

10-15-2013, 03:08 PM	#1
MadMaxM1 Registered 0 Rep 4 Posts Drives: E92 320i 2008 Step Sapphire Join Date: May 2013 Location: UK iTrader: (0)	E92 RFT increased profile First post so be gentle but used the great advice on here over the last year about RFTs so want to give some feedback and get advice. I made the mistake of just trying to replace rear RFT's when warning light came on and had it checked out at a cheap tyre garage. When they came to fit the tyres they found one of the 19" rear alloys was cracked. I arranged a visit to my local BMW garage and they did the tolerance test and replaced the wheel (and fitted the tyre) with no charge or quibble (refreshing). So my driving is moderate (more driving miss daisy than madmax) - 70mph ish on the motorway without much cause for accelerating or braking and 15k later my rears are low of tread - guess where? So I'm going to make the change to non-RFT XL's for ride improvement and some longevity. This won't be my first time. I briefly ran RFT's on a beloved E46 (bought E92 alloys that came with RFT) and the ride was terrible mostly due to suspension not set up for them. Switched to non-RFT's (Uniroyals) and they were great - lasted for 40k until I sold the car and they still had plenty of tread left. My current dilemma is about increased profile. Why not increase my 255 30 R19's from 30 to 35? My speedo is certainly towards the 5% over optimistic (satnav seems to confirm this) and service my car well before it's due - often change oil after 10k. I'm thinking that a slightly higher profile (clearly along with switching to RFT) will provide a little more give on the rims and save those seeming fragile alloys? Thanks
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10-15-2013, 03:41 PM	#2
djgandy Colonel 146 Rep 2,337 Posts Drives: E93 M3 Join Date: Aug 2012 Location: London iTrader: (0) Garage List 2011 M3 [0.00]	I thought of doing this too. I didn't in the end but I really think it would be worth it on the 19s
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10-15-2013, 03:47 PM	#3
E92NeilH Private First Class 4 Rep 150 Posts Drives: Bmw F20 M135i Join Date: May 2013 Location: Lincolnshire iTrader: (0) Garage List 2008 E92 BMW Msport ... [0.00]	I would stick with the original profile and just switch to the non RFT and get a compressor in the boot you would notice big difference. I couldn't wait to change mine to non RFT! Over priced crap and they don't ware evenly usually ware on the inside I cracked both my rear 19" wheels on mine
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10-15-2013, 04:22 PM	#4
MadMaxM1 Registered 0 Rep 4 Posts Drives: E92 320i 2008 Step Sapphire Join Date: May 2013 Location: UK iTrader: (0)	Hmmm still temped by 35 profile My 19" did crack when the tyre was quite worn on the inside - possibly the reason? I wonder how many have cracked when there is plenty of inside tread left? Non-RFT wear evenly so may also help the cause - but given the amount of potholes want as much cushioning as possible. Can't wait for the non-RFT first drive. Will go for the gerenally accepted Eagle F1's. I just won't accept the cost of annual rear tyre replacement for RFTs - a heavy premium for a sub-standard drive. I've clocked maybe 450k miles on non-RFT's and been lucky enough to have zero punctures, clocked 50k on RFT's and had two punctures.
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10-16-2013, 02:51 AM	#6
acerboo Brigadier General 179 Rep 3,923 Posts Drives: e92 335d lci Join Date: Jul 2008 Location: kent iTrader: (2)	what make are your rft's the bridgestones are crap I changed to Pirelli and they are worlds apart in terms of ride quality. rather than change the profile consider fitting 235 and 256
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10-16-2013, 03:03 AM	#7
gaza01 Colonel 105 Rep 2,692 Posts Drives: E92 335i Join Date: Dec 2010 Location: London iTrader: (3)	As acerboo said. That way u get a 'taller' tyre anyway and its a proven size on 19s for our cars. Its what most people run...incl me!
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02-25-2014, 04:07 PM	#10
MadMaxM1 Registered 0 Rep 4 Posts Drives: E92 320i 2008 Step Sapphire Join Date: May 2013 Location: UK iTrader: (0)	Update - replaced with profile of 30 rather than changing to 35 - thanks for advice. The non-RFT's do make a huge difference - so soft over uneaven surfaces and speed bumps. Still have RFT's on the front that have plenty of tread so will wait a little longer for the full experience.
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