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-   -   Run flat tires (https://xoutpost.com/bmw-sav-forums/x5-e70-forum/107967-run-flat-tires.html)

ard 04-17-2018 08:18 PM

Quote:

Originally Posted by master1917 (Post 1132839)
but hope they do it right.

Dont "hope".... "demand"

I assume you know where to set it, based on my posts?

GL!

master1917 04-17-2018 09:40 PM

Ard, I will have to look back and take notes of the numbers that work. I have also seen statements that extending tire life will compromise handling etc. So I am not sure I know the exact numbers I want to ask for.

Crowz 04-17-2018 10:48 PM

Quote:

Originally Posted by master1917 (Post 1132839)
I just killed both of my RF Bridgestones HP Duelers 275 40 20 by driving on highway from Toronto to Florida and back over 5k kms. Both bold on the outside with drivers more so. Shocked. Did alignment at Midas and pumped to 38psi befire the trip. Went back to Midas today to ask for my data but surely they dont store it. I found another shop with "German" alignment machine and made an appointment there - C$180 for alignment - crazy but hope they do it right. I will need new tires though.

I am looking for replacement Summer tires 275 and 315 for 20 rims as of last night when I arrived home and reading on forums that changing just the fronts and keeping used rears is not a good idea. In this case a non-RF came to mind as a quieter and more reliable/durable option. Came across Continental Extreme Contact Sport non RF. This is vs SSRs RFs or Bridgestone HP Dueler RFs. Dont want ti change tires twice per Summer.

Im flat loving the Pirelli scorpion verde rf the more I drive on them. Wear is perfect so far.

ard 04-18-2018 04:13 AM

Quote:

Originally Posted by master1917 (Post 1132844)
I have also seen statements that extending tire life will compromise handling etc. .

Sigh.

master1917 04-18-2018 08:09 AM

Quote:

Originally Posted by Crowz (Post 1132853)
Im flat loving the Pirelli scorpion verde rf the more I drive on them. Wear is perfect so far.

These are summers available in the staggered sizes? I will check them out. What life you expect from them? If you dont mind how much did you pay?

Big Smoke 04-18-2018 10:09 AM

master1917 - If your getting new tires. Do all four. Pay now or pay later. And later, I mean a few months down the short road.
Find a tire place that can do an alignment. Demand a full read out on paper, of the before specifications and the after specifications. If they are a good shop? They could give you the read out while sitting on your old tires. Your new alignment should be performed while sitting on your four new tires.
Your factory recommended parameters settings, are set to safe and max millage.
A more aggressive set up, will make it handle a little better, but will give up wear and safely. Like over/under steer.
If you would like to have a drive in my X5 on Conti dsw's. You are more than welcome to come visite. PM for a drive. Any lunch time yonge 401.
Should be changing over the tires this weekend. No more snow forecast ;)

Crowz 04-18-2018 12:23 PM

Quote:

Originally Posted by master1917 (Post 1132884)
These are summers available in the staggered sizes? I will check them out. What life you expect from them? If you dont mind how much did you pay?

Im not sure what all sizes they come in. They had the highest treadware rating of the run flats that I looked at but none of the rf tires has any real tread life warranty to them. They are also all season tires. Grip has been pretty good and they ride smooth.

ard 04-18-2018 01:18 PM

Quote:

Originally Posted by Big Smoke (Post 1132887)


Your factory recommended parameters settings, are set to safe and max millage.
A more aggressive set up, will make it handle a little better, but will give up wear and safely. Like over/under steer.


This is utter nonsense.

How about some specific number examples, since you are giving bad advice?

I mean please tell us what numbers are the BMW numbers? And what numbers are "more aggressive" and result in better handling?

Absolute nonsense.

Big Smoke 04-18-2018 05:15 PM

Quote:

Originally Posted by ard (Post 1132905)
This is utter nonsense.

How about some specific number examples, since you are giving bad advice?

I mean please tell us what numbers are the BMW numbers? And what numbers are "more aggressive" and result in better handling?

Absolute nonsense.

Sorry for offending you ard. I'm not going to quote any numbers. Just suggesting that there are many points of view. I'm not giving any advise, just pointing out there are options.
On one of my vehicles, they suggested a "four wheel alignment", I later found out, that the rear is not adjustable. So are they adjusting to what? just to line up with the back? I do my best to research, to the best of my knowledge. How is sharing a question, bad advise?

https://www.tirerack.com/tires/tiret...e.jsp?techid=4

from tire rack sight. Not my poppy cock.

"If you are a reserved driver, aligning your vehicle to the vehicle manufacturer's preferred settings is appropriate.

If you are an assertive driver who enjoys driving hard through the corners and expressway ramps, a performance alignment is appropriate for your car. A performance alignment consists of using the vehicle manufacturer's range of alignment specifications to maximize the tires' performance. A performance alignment calls for the manufacturer's maximum negative camber, maximum positive caster, and preferred toe settings. While remaining within the vehicle manufacturer's recommendations, these alignment settings will maximize tire performance."

"Many of today's alignment machines are equipped with printouts that compare the "before" and "after" alignment angles with the manufacturers' specifications. Requesting a post alignment printout can help you confirm the thoroughness of the alignment technician and preserve a record of your vehicle's intended settings in the case of an encounter with a suspension damaging road hazard."

Tomaz 04-18-2018 05:33 PM

Quote:

Originally Posted by Big Smoke (Post 1132923)
Sorry for offending you ard. I'm not going to quote any numbers. Just suggesting that there are many points of view. I'm not giving any advise, just pointing out there are options.
On one of my vehicles, they suggested a "four wheel alignment", I later found out, that the rear is not adjustable. So are they adjusting to what? just to line up with the back? I do my best to research, to the best of my knowledge. How is sharing a question, bad advise?

https://www.tirerack.com/tires/tiret...e.jsp?techid=4

from tire rack sight. Not my poppy cock.

"If you are a reserved driver, aligning your vehicle to the vehicle manufacturer's preferred settings is appropriate.

If you are an assertive driver who enjoys driving hard through the corners and expressway ramps, a performance alignment is appropriate for your car. A performance alignment consists of using the vehicle manufacturer's range of alignment specifications to maximize the tires' performance. A performance alignment calls for the manufacturer's maximum negative camber, maximum positive caster, and preferred toe settings. While remaining within the vehicle manufacturer's recommendations, these alignment settings will maximize tire performance."

Your advise is not bad and is in fact correct. As for the 4 wheel alignment the X5 is definitely able to be aligned on all 4 corners. I had my rear camber adjusted from the factory set negative 1.5° to as close to neutral as possible to reduce inner tire wear.


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