Red tyre dots

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billvega
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Red tyre dots

Post by billvega » Tue Jan 22, 2019 7:42 am

I had 4 Michellin Pilot Sport 4's installed on my Venoms yesterday.

Only the front 2 had the red dots on them which I believe are to be aligned with the valve. They were, sort of, maybe an inch or 2 off, does this matter?

I then removed them when I got home as my OCD can not allow these unsightly dots to remain!

When tyre repairs are done, say because of a screw causing a puncture, do they remove the whole tyre? I'm worried now I shouldn't have removed them in case this happens.

Happy otherwise, give a nice ride.
XE R Sport 180, MY18, Corris Grey, Black Pack/Venoms, Cold Climate, 40/20/40, Parking Pack, 10-Way Seats & 4-Way Lumbar.

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PhilB
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Re: Red tyre dots

Post by PhilB » Tue Jan 22, 2019 8:01 am

They are aiming points Bill, in case the police ever have to shoot your tyres out.
Wise move to remove them.
:D

Seriously though they will take the tyre off to repair it and balance it again once it's back on so no worries.
2019 Evoque P300 HSE, Carpathian Grey.
2017 XE S 380, Carpathian grey.
2015 XE S 340, British Racing Green.

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BRC
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Re: Red tyre dots

Post by BRC » Tue Jan 22, 2019 8:04 am

Typically the red dot indicates the point on the tyre that SHOULD be mounted next to the valve stem for the best balance. Every tyre has a high and a low spot, the difference of which is called radial run out. Manufacturers typically mark this high point with a red dot on the tyre sidewall.
Other than that nothing to worry about :?
XE Portfolio now replaced by an XF R Sport and a Z4 garage queen!

Indianajons
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Re: Red tyre dots

Post by Indianajons » Tue Jan 22, 2019 8:19 am

Red dot indicates high point of tyre and should be opposite valve, white or yellow spot indicates low point and should be next to valve. If dots are present and not correctly aligned, the wheel will just need more weights to balance it.
https://blobs.continental-tires.com/www ... s-data.pdf
2017 MY tempest grey Portfolio 180D, folding mirrors, 14 way seats, memory pack, cold weather pack, 360 parking, wi-fi hotspot

ChrisGB
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Re: Red tyre dots

Post by ChrisGB » Tue Jan 22, 2019 8:45 am

How are the PS4 from a tyre noise point of view?
S 380, ICT Pro, resale grey. Fun and comfy!

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billvega
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Re: Red tyre dots

Post by billvega » Tue Jan 22, 2019 10:09 am

ChrisGB wrote:
Tue Jan 22, 2019 8:45 am
How are the PS4 from a tyre noise point of view?
I've noticed no difference in noise so far
XE R Sport 180, MY18, Corris Grey, Black Pack/Venoms, Cold Climate, 40/20/40, Parking Pack, 10-Way Seats & 4-Way Lumbar.

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billvega
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Re: Red tyre dots

Post by billvega » Tue Jan 22, 2019 10:10 am

How come the rear ones didn't have dots? Different size but why does that matter?
XE R Sport 180, MY18, Corris Grey, Black Pack/Venoms, Cold Climate, 40/20/40, Parking Pack, 10-Way Seats & 4-Way Lumbar.

Indianajons
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Re: Red tyre dots

Post by Indianajons » Tue Jan 22, 2019 12:28 pm

billvega wrote:
Tue Jan 22, 2019 10:10 am
How come the rear ones didn't have dots? Different size but why does that matter?
Dots may be on inside of tyre as fitted or absent altogether if tyre is balanced all round
2017 MY tempest grey Portfolio 180D, folding mirrors, 14 way seats, memory pack, cold weather pack, 360 parking, wi-fi hotspot

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Nevyn
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Re: Red tyre dots

Post by Nevyn » Tue Jan 22, 2019 12:40 pm

I can honestly say I've never seen a fitter line up the dots with anything when I've had new tyres and never had a problem. As long as they're balanced properly it shouldn't make a difference. The TPMS valves are going to weigh more than any difference in the tyre...
2016 180d Portfolio Auto. Ammonite Grey + Light Oyster. 19" Star 5 Twin-Spokes + lots of toys...
http://www.xeforums.co.uk/viewtopic.php?f=10&t=2888

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BRC
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Re: Red tyre dots

Post by BRC » Tue Jan 22, 2019 12:54 pm

That’s precisely why the dots are there, to reduce the amount of balancing that may be required as Indiajons and Nevyn mentioned a few posts ago. More balancing weights may be necessary if the reference points do not line up. Would appear no big deal and in practice I can't say I've seen any tyre fitter lining up accordingly. If going forward I see a lead carbuncle on my any of my rims I'll have an idea as to why it might be there!
XE Portfolio now replaced by an XF R Sport and a Z4 garage queen!

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