Posted by The Older Gentleman on November 14, 2009, 2:19 am
> The Older Gentleman wrote:
> >
> >> A motorcycle owner is well advised to use the original equipment tire
> >> (if he can still get it)
> >
> > Nonsense.
> >
> >
> Agreed.
>
> Not that there is anything necessarily wrong with the OEM
> tire, but that doesn't mean it's the best.
Quite
>
> Generally speaking the OEM size is good, and is chosen
> according to engineering calculations, but the brand and
> type is picked by the lowest bidder for that size and type.
Quite. I remember my Duke came fitted with Michelin Macadams - a
dreadful rock-hard touring tyre.
>
> Tire technology also changes quickly,
This is another good point that I hadn't considered. According to
Krusty's logic, if you have a 30 year-old bike, you should seek out 30
yer-old tyres for it.
--
BMW K1100LT Ducati 750SS Triumph Street Triple Honda CB400F
Suzuki TS250 Suzuki GN250 chateaudotmurrayatidnetdotcom
Nothing damages a machine more than an ignoramus with a manual, a
can-do attitude and a set of cheap tools
Posted by Nagarjuna's Catuskoti clawed m on November 14, 2009, 9:37 am
> Generally speaking the OEM size is good, and is chosen
> according to engineering calculations, but the brand and
> type is picked by the lowest bidder for that size and type.
That's a dated story from the mid-1970's. We live in the 21st century,
if you haven't noticed.
The bean counters at Japan Inc. used to buy tires in mass quantities
because they could save a nickel on each tire and a Honda CB750 only
had about 50 horsepower and would barely go 120 mph.
Japan Inc. could, and did, get way with selling motorcycles with
capital-C Crappy
tires.
But, as demands for performance and higher continuous speeds
increased, the demands on tires became greater and Japan Inc.
requested tires to be built to meet those demands.
So, if you go to the Bridgestone web site looking for aftermarket
replacement tires, you will find that there is a generic BS tire of
many offering, and there is
a *model-specific* version of a tire with an otherwise generic set of
model numbers.
IOW, there are versions of Battle Ax tires that are specifically
designed for BMW's or Kawasaki ZX's, etc., but you wouldn't know which
Battle Ax was specific for a particular machine if you were browsing
the tire rack at a discount
parts outlet.
And, when the online catalog stores are offering deep discounts on MC
tires, you
need to know whether the tire you're mail ordering is a generic
aftermarket replacement or model specific part number.
Posted by frijoli on November 14, 2009, 10:13 am
Nagarjuna's Catuskoti clawed me! wrote:
>
>> Generally speaking the OEM size is good, and is chosen
>> according to engineering calculations, but the brand and
>> type is picked by the lowest bidder for that size and type.
>
> That's a dated story from the mid-1970's. We live in the 21st century,
> if you haven't noticed.
That was from experience as I used to work for Bridgestone
in the sales and engineering group. I don't know what
article you are referring to either way.
As I said tires are engineered into the bikes according to
the needs of the bike and riding type. Then, and this IS a
fact even today, the specifications are sent to the tire
manufacturers and they BID on the project.
You are correct too in that model specific tires are used.
However, the model specific tire are in fact a CHEAPER
version of the same non model specific in most cases. In
cases that the model specific tire is not a cheaper version,
then they are the SAME as all the other tires of that type
and model.
Posted by Mark Olson on November 14, 2009, 11:33 am
frijoli wrote:
> You are correct too in that model specific tires are used.
> However, the model specific tire are in fact a CHEAPER version of the
> same non model specific in most cases. In cases that the model specific
> tire is not a cheaper version, then they are the SAME as all the other
> tires of that type and model.
I don't think this is true in all cases. My FJR came with model
specific Metezeler Roadtec Z6 tires with a "C" suffix. These tires are
significantly more expensive than the ones without the "C" suffix. I
suspect the reason is due to heavier construction.
METZELER Z6 ROADTEC 180/55ZR-17 REAR [03020012] $140.07
http://www.americanmototire.com/catalog/product_info.php?cPath3_165_170&products_id405
METZELER Z6 ROADTEC 180/55ZR-17 (73W) C REAR [16-03040033] $167.68
http://www.americanmototire.com/catalog/product_info.php?cPath3_165_170&products_id423
Posted by frijoli on November 14, 2009, 11:54 am
Mark Olson wrote:
> frijoli wrote:
>
>> You are correct too in that model specific tires are used.
>> However, the model specific tire are in fact a CHEAPER version of the
>> same non model specific in most cases. In cases that the model
>> specific tire is not a cheaper version, then they are the SAME as all
>> the other tires of that type and model.
>
> I don't think this is true in all cases. My FJR came with model
> specific Metezeler Roadtec Z6 tires with a "C" suffix. These tires are
> significantly more expensive than the ones without the "C" suffix. I
> suspect the reason is due to heavier construction.
>
> METZELER Z6 ROADTEC 180/55ZR-17 REAR [03020012] $140.07
>
http://www.americanmototire.com/catalog/product_info.php?cPath3_165_170&products_id405
>
>
> METZELER Z6 ROADTEC 180/55ZR-17 (73W) C REAR [16-03040033] $167.68
>
http://www.americanmototire.com/catalog/product_info.php?cPath3_165_170&products_id423
>
Fair enough.
My comment was a little too broad, and was directed at the
post that you should always use the exact same tire as was
put on at the factory.
In your case and in others there are no tires that fit the
stock product lines, and special tires are developed to meet
the engineering criteria for the motorcycle. I stand by what
I said though, that the specs are given to the
manufacturers, and the lowest bidder typically gets the
business.
That doesn't mean there isn't a BETTER tire available.
> >
> >> A motorcycle owner is well advised to use the original equipment tire
> >> (if he can still get it)
> >
> > Nonsense.
> >
> >
> Agreed.
>
> Not that there is anything necessarily wrong with the OEM
> tire, but that doesn't mean it's the best.
Quite
>
> Generally speaking the OEM size is good, and is chosen
> according to engineering calculations, but the brand and
> type is picked by the lowest bidder for that size and type.