Over the weekend , I had two flat tires on the same wheel. Tires
are tube type ( Dunlop SP Sport VR 15’s) on Dayton rims and are
about 8 yrs old with little wear. On Saturday I had the tube
replaced ( no evidence of external tire puncture) and on Sunday
while driving the car , the second flat ocurred ,and again there
was no evidence of an external tire puncture. Questions:
Is it most likely that the first flat ocurred because of a spoke
puncture (tire was fine last year and up to now),even though there
doesn’t appear to be a problem with the spokes.
Is it most likely that the second flat ocurred due to the same
problem or potentially a mismounting problem ( pinched tube)
Unfortunately when the second flat ocurred, the tire was damaged
and must be replaced. The Dunlop SP Sport VR 15’s are nolonger
manufactured but I’m told that the ‘‘H’’ rated version currently
available is the same tire and interchangeable with the VR. Can
anyone confirm this.
Thanks!
Don–
Don Hobbs
North Augusta,Ontario, Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
Don Hobbs8/24/04 11:18 PMdhobbs@ripnet.com
Don, I’m going to send you, off line , information that I received on this
subject from Vintage Tyre in the UK in the summer of 2002.
Bob 889076
Over the weekend , I had two flat tires on the same wheel. Tires
are tube type ( Dunlop SP Sport VR 15’s) on Dayton rims and are
about 8 yrs old with little wear. On Saturday I had the tube
replaced ( no evidence of external tire puncture) and on Sunday
while driving the car , the second flat ocurred ,and again there
was no evidence of an external tire puncture. Questions:
Is it most likely that the first flat ocurred because of a spoke
puncture (tire was fine last year and up to now),even though there
doesn’t appear to be a problem with the spokes.
Is it most likely that the second flat ocurred due to the same
problem or potentially a mismounting problem ( pinched tube)
Unfortunately when the second flat ocurred, the tire was damaged
and must be replaced. The Dunlop SP Sport VR 15’s are nolonger
manufactured but I’m told that the ‘‘H’’ rated version currently
available is the same tire and interchangeable with the VR. Can
anyone confirm this.
Thanks!
Don
Don Hobbs
North Augusta,Ontario, Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from Don Hobbs sent Wed 25 Aug 2004:
Don,
I have a hard time seeing any way this can not be laid at the
feet of the guy that repaired the first flat. If there was anything about the wheel or inside of the tire that could
possibly have caused the flat, it should have been found and
corrected as part of the inspection that would be part of any
competent flat repair. The only other reasonable cause is the new
tube was not installed properly, which is highly likely, since few
tire shops know how to deal with tubes anymore. Did they apply
talcum powder, or something similar to the inside of the tire
before mounting? Did they remove any and all tags from the tire
and tube? Did they make sure the rubber band protecting the tube
from the spoke nipples was properly positioned, and in good
condition?–
Ray Livingston - '64 OTS Santa Cruz, CA
Santa Cruz, CA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from Don Hobbs sent Wed 25 Aug 2004:
Don!
Last summer I had a tube leak right at the valve stem
area. Check the wheel valve stem hole, if its sharp it
will cut the tube valve stem like a knife.
Walter–
The original message included these comments:
Over the weekend , I had two flat tires on the same wheel. Tires
are tube type ( Dunlop SP Sport VR 15’s) on Dayton rims and are
about 8 yrs old with little wear. On Saturday I had the tube
–
69E / 78XJ6 / 73 VW Ghia
albuquerque/new mexico, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from Ray Livingston sent Wed 25 Aug 2004:
Hi Ray;
Thanks for the response to my posting! Although I wasn’t present
when the job was done , I doubt that proper mounting techniques
were followed. Even if I had been there , I wasn’t aware that tube
mounting was a ‘‘lost art’’ and there were critical steps to be
followed in the process. Fortunately for the forum , I do now.
Today I talked to one local tire shop owner who apparently has
some expertise in working with tubes and spoked wheels and he said
that they are simply problematic . I’m not sure if that statement
is consistent with the experience of many forum members but I would
be interested to know if it is.
Thanks!
Don–
Don Hobbs
North Augusta,Ontario, Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from W. Schuster sent Fri 27 Aug 2004:
Thanks for the reply Walter. I had heard of that possibility too
and I believe there are special plastic sleeves that can be
purchased to go over the stem to prevent that from happening.
However , in my case the stems were ok , the holes were in the
tubes.
Don–
Don Hobbs
North Augusta,Ontario, Canada
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from Don Hobbs sent Fri 27 Aug 2004:
Don,
I think tubed tires are problematic, due to the fact that so
few people know how to handle them properly. I suspect they may
also be slightly less reliable, statistically speaking as well,
though not greatly so. I think by far the biggest problems are
poor quality tubes, and improper handling and installation.–
Ray Livingston - '64 OTS Santa Cruz, CA
Santa Cruz, CA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
Ray, ya might be right on the tube tyres, but I’ve run them for over 18
years on KoolKat with only one flat in that time period & it was nail & misc
road objects that caused the flat. I’m running 205x65x15s P6000s on original
wheels, with tubes & the “rubber band” with bump stops removed. Mounting the
tubes & tyres could be a lost art, no doubt, but I watched the guy do the
job and by the way, He was the oldest guy in the shop and yes I did tip Him
for His efforts.
Mike & KoolKat 1E16928 ’ 68 OTS in Phoenix----- Original Message -----
From: “Ray Livingston” rayl@atc.creative.com
Don,
I think tubed tires are problematic, due to the fact that so
few people know how to handle them properly. I suspect they may
also be slightly less reliable, statistically speaking as well,
though not greatly so. I think by far the biggest problems are
poor quality tubes, and improper handling and installation.
Since everyone seems to be off the Pirelli P4000, espeically in
the wet, has anyone tried the Dunlop Signature? Is very
inexpensive and I cant find any reports on it.
In reply to a message from DEWITT sent Sat 27 Aug 2011:
I don’t know it, but check http://tirerack.com in the size you want
(205/50-15?) They rate it pretty highly and show user reports, but
it’s only T rated (118 MPH) and you probably want at least H rated
(130 MPH). Kumho has a cheaper H rated tire.
The Signature is OK for 5’’ rims, and that’s rare, but you’d
probably get better handling with a narrower tire on 5’’ rims. Wide
tires on narrow rims have disadvantages.
I see the Kumho is not OK for 5’’ rims.
If you are just going to the grocery store, T rated tires are fine.
Tire Rack is a font of valid information about tires, check it out.
Jerry–
Jerry Mouton '64 FHC 889791 ‘MIK Jaguar’
Palo Alto, California, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from mouton sent Sat 27 Aug 2011:
Jerry I am running wider tires with 6’’ Daytons on the Series
III. Most go with 215/65/15 but those are impossible to find so
many use 215/70/15. I have heard of a few at 225 but I know
mine would rub if I got that wide. Anyway the only Dunlop in
this size is the Signature, likewise none of the new Pirellis
will fit.–
CBD
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
In reply to a message from DEWITT sent Sat 27 Aug 2011:
Sorry, I neglected to check your signature! Dunlop has some pretty
good tires now, I’ll probably go with their StarSpecs for
autocrossing when my Bridgestones wear out. Brand does not imply
tire quality though, all brands offer great tires and crap tires –
it is specifically the tire design that defines how they work.
Looks like the Signature might be one of the good ones for slow
driving, let us know how you like it if that’s what you go for.
Tire Rack shows plenty of 215/65-15 tires, 4 with H ratings and all
cheap, as low as $72 each. Also 215/70-15s (all T rated) or 215/60-
15s. The 215/70-15s pretty much match the revs/mile spec of the
original bias ply tires (777), interestingly enough.
If you don’t like tires by mail, go to your Discount Tire and ask
for the specific tire you want and quote the TireRack price. They
have always pretty much matched it for me. But I have had plenty
of good experiences with Tire Rack tires.
Jerry–
Jerry Mouton '64 FHC 889791 ‘MIK Jaguar’
Palo Alto, California, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–