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Old 19th November 2008, 21:08   #1
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BMW 520d tyres (Advice needed)

Hi,

On my 520d the factory tyre is the 225/50-17 runflat.
I was going to replace them with 225/55-17 regular type. This size is slighlty taller then the factory fitted tyres by about 0.5 inches (overall increase in diameter is 1 inch)
This would make ride more cushiony and also increase the ground clearence by about 11 mm.

Any ideas as to if this would cause any probs with the cars safety electronics such as DSC, DTC, ABS etc.? I know that the speedo reading would be slighyly off, but that is no big deal.

Expert views would be welcome. Thanks

Last edited by aah78 : 20th November 2008 at 01:00. Reason: Moved to correct section.
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Old 20th November 2008, 00:45   #2
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do not change the circumference of the tyre. What you propose is a larger circumference & so, your car will be all confused. You will leave track of fuel consumption figure, km reading, pickup as wellas warranties.

Contact the dealer and tell him that you need to refer to the 'Wheel & Tyre Combination' software. Just clarify your doubts there.
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Old 20th November 2008, 01:13   #3
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change is good.

Quote:
Originally Posted by ackyash View Post
On my 520d the factory tyre is the 225/50-17 runflat.
I was going to replace them with 225/55-17 regular type.
No you won't have any problems with the electronics and safety equipment.

To get rid of the stiff ride of the Runflat tyres, why not change over to same-dimension tyres?
Same dimension non-runflat tyres will give you a much better ride, all other factors remaining relatively constant.

Quote:
Originally Posted by BeamerBoy View Post
do not change the circumference of the tyre. What you propose is a larger circumference & so, your car will be all confused. You will leave track of fuel consumption figure, km reading, pickup as wellas warranties.
It's a slight 3% change. Readings will vary only a few degrees.
The fuel consumption figure is a farce anyways. The km reading & pickup will be affected slightly but not enough to press the panic button.

What warranty issue are you talking about here?

His speedo will read approximately 3km/h higher though.
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Old 20th November 2008, 09:14   #4
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don't go up on the profile. Moving over to tubeless will give you the comfort you are looking for...it's a Huge difference!
You can go a little wider. I think 235/50r17 will fit without a problem too.
Which tires are u planning on putting? I recommend michellin PS2s but not sure of they are there in that size.
How much are u getting for the run flats?
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Old 20th November 2008, 09:40   #5
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Okay guys thanks for your feedback.

Just wanted to let you all know that I just placed order for a X3 2.0d and it should be here in Feb 09. Can hardly wait. Will post pics and stuff once I get it.

Also planning to move up to 235/60-17 from the factory 235/55-17 on the X3 the day I get it. LOL
To increase GC even more and do some real off-roading.
Thank god it does not come fitted with runflats.

I can sense that my dad is eyeing my 520d now.

Ahh one more thing, dealer is asking for 3.08 lacs for 5yrs/100,000 kms package.
Is it worth it?
My calculation is that if I put 3.08 lacs in a Fixed Deposit at the time of taking delivey of x3, rather than buying the package than my money would become double anyway over a 5 yr period, ie almost 6 lacs.
So the real cost of that package is over 6 lacs.

What would be worth buying is an exteneded warranty at the end of the 2nd yr.

Will keep you all posted. Thanks.
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Old 20th November 2008, 10:23   #6
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Congrats ackyash !

The X3 is a great machine in it's own way but I prefer the 5 series as my personal choice over it.

Btw, how much did the X3 2.0 cost you?

Do you already have a 520d and the X3 is your 2nd car? I really dont see a need to increase ground clearence further, but going wider would improve handling and looks.
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Old 20th November 2008, 11:46   #7
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Hey, yeah we already have a 520d and just placed order for X3 2.0d
It will cost me 40.9 (basic x3 2.0d) + 1.0 (xenon lights) + 0.25 (lights package) = 42.15

The dealer here informed me that there is going to be a price increase across all the BMW models in India from Jan 09 due to the substanial increase in the Euro rate. He said as much as 3 to 4 % price rise is possible. So I'm just keeping my fingers crossed that I end up paying 42.15 and not more. My car will be billed to me in Feb 09

I ordered mine is space grey metalic with black leather. The dealer had a few x3's coming in Nov end and Dec beginning but they are all in black or white. Probably he wanted me pick up one of the incoming cars rather than special ordering one for me as that would decrease his inventory cost, so he tried the price increase story. Time will tell.

Any news on this?

Later,
Acky
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Old 20th November 2008, 12:56   #8
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Congrats on the X3 acky,

re the tyres for 520d, i replaced mine with Pirelli Zero Rosso tyres of 245/45/17. Ride is very good with these. i replaced these tyres before takign the delivery itself. Gave them my tyres, and they put that on, and then i took the delivery.
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Old 20th November 2008, 13:07   #9
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@ackyash: 40.9 is OTR pricing or ex-showroom? You should upsize to 18 or 19inch to make the car look more appealing.
The X3 2.0d has the same engine as the 520d?

Quote:
Originally Posted by Insane Devil View Post
Congrats on the X3 acky,

re the tyres for 520d, i replaced mine with Pirelli Zero Rosso tyres of 245/45/17. Ride is very good with these. i replaced these tyres before takign the delivery itself. Gave them my tyres, and they put that on, and then i took the delivery.
ID: I thought you kept the orignal tyre size itself. So you claim even with 45 profile your car is that much more comfortable than a 50 profile run flat.

Did increasing the width from 225 to 245 have a slight drop in pick up or fuel consumption?

My tyres have done well above 21,000kms now and from the looks of it there is still a lot of life let in them I'm itching to switch over to tubeless.

You got the spare wheel kit from BMW itself right?

Last edited by Sahil : 20th November 2008 at 13:14.
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Old 20th November 2008, 18:03   #10
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Dude, 40.9 lacs is ex-showroom. Insurance and registration is separate, but here in Chandigarh the registration fees is a flat Rs. 2600/- whether u get a Hyundai Verna registered or a BMW 530d. Cool huh?

If anyone has the price for the BSI ultimate for x3 2.0d for 5yr/60000 kms? Please lemme know. Thanks

Regarding the 18" or 19" wheels I'm looking for a smooth and comfy ride and going for bigger rims is going to defeat the purpose, that is why going to change tires to 235/60-17 from 235/55-17 once I take delivery.

Cheers.
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Old 20th November 2008, 18:32   #11
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Hi,

I have the BSI - 5 years 60,000 km Ultimate package for my 530d highline.
Costs 2.4 lacs.
I guess the X3 2.0d , should be similar.
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Old 20th November 2008, 19:36   #12
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Quote:
Originally Posted by ecclipse78 View Post
Hi,

I have the BSI - 5 years 60,000 km Ultimate package for my 530d highline.
Costs 2.4 lacs.
I guess the X3 2.0d , should be similar.
X3 2.0d BSI Ultimate prices (Ultimate=Maintenance & Ext Wty)

3Y & 60K kms: 1.55 lacs
3Y & 90K kms: 2.20 lacs
5Y & 60K kms: 2.05 lacs
5Y & 100K kms: 3.08 lacs

Me thinks... go in for 3Y/60K package. (keep the rest as FD by your logic). Take a topup to 5Y/60 if you consume the years faster than kms or take a topup to 3Y/90 if you end up using the kms faster.

If after this, you still continue to be faithful to your love (X3) then go for the ultimate topup to 5y/100 or else simply look out for other 'models'
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Old 20th November 2008, 21:02   #13
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BeamerBoy,

Firstly thx for the info, greatly appreciate it.
So u mean to say that if I go for the 3Y & 60K kms @ 1.55 lacs, I can upgrade to more expensive packages by paying the additional difference amount at a later date.

We have 5 cars at home and all are pretty low mileage, my main car most of the time (which I use to go to office, meetings etc) is a 2006 Laura L&K which I had bought in Feb 2006 and it has about 40,000 kms on it now.
So I can buy the Rs. 1.66 lac pack (3yr & 60k kms) at the time of purchase of my x3 2.0d and upgrade to the 5yr /100k kims pack at the end of the 3rd year by paying the difference of about 1.5 lacs.

Am I correct in my analysis?
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Old 24th November 2008, 17:46   #14
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Quote:
Originally Posted by Sahil View Post

ID: I thought you kept the orignal tyre size itself. So you claim even with 45 profile your car is that much more comfortable than a 50 profile run flat.

Did increasing the width from 225 to 245 have a slight drop in pick up or fuel consumption?

My tyres have done well above 21,000kms now and from the looks of it there is still a lot of life let in them I'm itching to switch over to tubeless.

You got the spare wheel kit from BMW itself right?

Hey Sahil!

1. I did take the lower profile - 45, but it has not made the car into a lower profile. as u know, the profile is calculated on the percentages... 245/45 = 225/50 the overall diameter of the tyre is same. if i had put in 225/45, then i would have gone low.
its like..
45% of 245
50% of 225

2. My ride is much much better than stock, and even the dealer is amazed by that!

3. Yes i had got the Space Saver Spare Wheel kit from the Dealer itself, cost me aroudn 22k. they have to order for u from germany, so took around 20 days.

4. I understand the itch my friend! i got a similar itch pertaining to my Laura.
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Old 25th November 2008, 00:45   #15
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Can you please give me the exact size of the space saver spare rim and tyre?
It was posted by someone in another thread but i can't seem to find it anymore.
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