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Messages - Spandex

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General Discussion / Re: Tracker advice
« on: June 20, 2018, 07:53:33 PM »
But as mentioned above, you need to factor in the installation and subscription cost of the tracker. Once you add in the £150-200 a year, are Aviva still competitive?

Having a tracker probably has very little benefit to you beyond associated insurance discounts (can’t say I’d want my car back if it got nicked) so you need to just treat the costs as part of your premium when running the numbers.

General Discussion / Re: Tracker advice
« on: June 20, 2018, 07:31:22 PM »
Does anyone have any advice on this please?
Change insurer?

Seriously, it’s worth looking around. You might find you can get insured for the same or less than what Aviva are asking, without the tracker.

General X5 Forum (E70) / Re: higher mileage v lower mileage
« on: June 19, 2018, 07:54:52 AM »
As a general rule (for any car, and nothing to do with LCI) I would say to always prioritise age over mileage.

Obviously there will be other considerations like condition, options, etc, but all things being equal I’d always take a newer, higher mileage car over an older, lower mileage one.

General X5 Forum (E70) / Re: Running boards
« on: June 19, 2018, 07:49:30 AM »
I don’t think realoem will help. The running boards seem to only be available as a complete kit and the parts catalogues don’t list individual parts. You could try your local BMW parts counter, but I suspect they’ll see the same thing on their system.

How would you design a sharp, responsive 4x4 system which can compensate 4 different rolling radius????? ???
That’s what differentials do all day long (unless you somehow only ever drive on arrow-straight roads). So the issue isn’t 4 different wheel speeds, it’s the degree of difference and amount of time that difference is present - I.e. it’s down to the heat generated.

Dealing with this isn’t impossible, it’s just an unnecessary additional cost for car manufacturers. The additional cost of warranty repairs is probably significantly less than the cost of over-engineering the drivetrain.

General X5 Forum (E70) / Re: Cic IDrive
« on: May 03, 2018, 01:04:57 PM »
I think they changed over in Q4 2009 in the factory, although you have to bear in mind the registration date will always trail the build date. I don't think I've seen CIC on anything with a 59 plate.

If you're just looking at photos, the best way to identify CIC is the shortcut buttons surrounding the iDrive knob. The user interface itself is very different, but obviously you'd have to be sitting in the car (or there be photos of it switched on) to see that.

General X6 Discussion / Re: Huge sat nav screen.
« on: May 02, 2018, 09:40:29 PM »
Normally I don’t like aftermarket head units in a car, but that wouldn’t put me off buying an e70 one bit. In fact, it would be a selling point. They do look nice, and you still have full access to the idrive when you want.

General X6 Discussion / Re: Huge sat nav screen.
« on: May 02, 2018, 03:53:57 PM »

General X5 Forum (E70) / Re: A star tyres , myth or fact
« on: April 28, 2018, 11:18:27 PM »
You can’t really compare the different systems used by other manufacturers because, well, they’re different. I used to have a Tuareg, and that was also sensitive to differences in tyre diameter, although I don’t believe a staggered setup was offered on that car, so the issue was only of concern to people replacing the tyres on one axle, or fitting different tyre models on each axle.

All 4wd systems can handle a speed difference front to back - otherwise you couldn’t drive them round corners - but the design of the system will govern how long it can handle that difference for. Cornering alone won’t introduce too much heat into the system, but significantly different tyre sizes probably will, as it will be a constant effect.

General X5 Forum (E70) / Re: A star tyres , myth or fact
« on: April 27, 2018, 10:53:55 AM »
The trouble is, information on BMWs website is clearly just marketing nonsense. For example, they say that the star mark ensures "that they are made specifically for your BMW model", yet clearly this cannot be true because certain tyres can be used across a number of different models. So, we know that the tyres definitely aren't made for our specific model. What are we left with? Lots of claims of 'optimum' grip, comfort, safety, etc. Nice to know, but not really relevant to discussions about rolling radius or transfer boxes.

It seems clear though that the star mark program is a set of quality requirements and a testing process. Given that the staggered setup for the E70 should (if the sidewall specs are followed accurately) result in identical diameters, and assuming that part of the BMW quality requirements covers accuracy of sidewall specs, it's likely that the star mark can be taken to demonstrate that the tyres will be the same diameter when new across a staggered setup. Nothing to do with being designed for that car or that specific wheel configuration - just a simple design tolerance and testing program.

But the problems arise when people use that information to make unsupported assumptions about non-star marked tyres. For example, a particular tyre might meet every single one of BMWs quality requirements, but won't be eligible for a star mark because it's not runflat. It's even possible that there are tyres out there that exceed all of BMWs specs, but for commercial reasons the tyre manufacturer has simply decided not to submit it for testing. Perhaps the testing process is expensive (you can be sure BMW don't pay for it). Perhaps it's not cost effective if you know that tyre design isn't likely to sell in large volumes in that particular size/load rating.

There is so much information we're missing here, so it's disappointing when people come on forums asking for advice and receive what is basically a proclamation - "thou shalt not fit non-approved tyres, lest thy transfer box doth expire!"

General X5 Forum (E70) / Re: 4.8 V8 economy
« on: April 22, 2018, 09:51:28 AM »
You’ll get more than 17. I get 18mpg as a long term average and that is almost entirely my rush-hour commute of about 15 miles with a mixture of flowing 70mph dual carriageways and stop-start traffic. For a mostly motorway run (with a bit of normal roads either end) I’d expect low 20’s.

General X5 Forum (E70) / Re: A star tyres , myth or fact
« on: April 21, 2018, 05:12:08 PM »
If you can get a photo of the fronts next to the rears on a flat surface for comparison, that might help others considering them too.

General X5 Forum (E70) / Re: A star tyres , myth or fact
« on: April 18, 2018, 11:53:04 PM »
There are numerous threads across various forums where people discuss uneven wear front to back on these cars. It’s not uncommon.

Regardless, it’s a hypothetical question. How the treads end up different isn’t really relevant. Do you know the answer?

General X5 Forum (E70) / Re: A star tyres , myth or fact
« on: April 18, 2018, 11:05:00 PM »
I’m not talking about wearing unevenly across the tread of a single tyre. I’m talking about the fact that the front pair will wear at a different rate to the rear pair. Nothing to do with alignment.

General X5 Forum (E70) / Re: Tow weight chassis plate
« on: April 18, 2018, 08:15:07 AM »
Isn’t your max towing weight a legal definition, rather than a technical one? What I mean is, if the registration documentation says you can only tow 2500kgs, then that’s all you’re allowed to tow legally, and what’s written in a manual, or chassis plate, or what you’re technically capable of towing, is completely irrelevant.

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