Bead shape of Goodyear LandSpeed and FrontRunner. And,D2870 cross-section.

[Takatsukasa_Fumio]

Nice to meet you all.
This will be the first topic I will be putting up.

http://www.landracing.com/forum/index.php?topic=14898.0

Heliophile wrote this about the Goodyear D2904 on July 17, 2015.

>This tire requires a motorcycle wheel bead shape, which has a slightly smaller than a car wheel bead shape, as discussed in detail on another forum thread.

I was going to write a question in the original thread, but I got the following message, so I started a new topic.
>Warning: this topic has not been posted in for at least 120 days.
>Unless you're sure you want to reply, please consider starting a new topic.


Q1:
Reading the Goodyear catalog, the Goodyear D2904 is listed as both a Front Runner and a Land Speed. Does anyone know if this means they are the same thing, or if there is a "Front Runner D2904" and a "Land Speed D2904"?

Also, there is no bead shape information in the Goodyear catalog.

Q2:
Are there other Land Speeds or Front Runners that have motorcycle bead shapes?

For example, what kind of bead shape does the Front Runner D1445 or the Land Speed D2870 have?

Q3:
Also, according to the catalog, the Land Speed D2870, which has the largest outside diameter, has a 6.5" rim width and 8.5" section width, but the tread width is 3".
Does this mean that the D2870 has a narrow tread width with a round section shape like a motorcycle tire?


Thanks,

Fumio

[Stainless1]

Q1... same tire can be used for either.... motorcycle/dragster front bead style

Q2... the only the 17s are the motorcycle bead... all others automotive

Q3... I would call Goodyear on that one... looks like a misprint to me... Hard to imagine how that can be.  Never looked there since that is a really tall tire.

But all the landspeed tires are a rounded profile, no square corners

[Takatsukasa_Fumio]

Thank you!