Tire size comparison, (split from the dano thread)

HDTony · Oct 15, 2002

LOL, no way it's cold out, I aint bringin my bike out

Meulen · Oct 15, 2002

GsxrTony said:
LOL, no way it's cold out, I aint bringin my bike out

I give up:rolleyes :rolleyes :rolleyes LOL LOL LOL

vtr996 · Oct 15, 2002

This thread is giving me a headache....LOL TMI TMI!!!!

I sure like my 163 sized rear tire though ;-)

Underdog · Oct 15, 2002

You guys keep this up long enough and somebody's gonna stumble on the cure for cancer!

(complete with diagrams even)

HDTony · Oct 15, 2002

Underdog said:
You guys keep this up long enough and somebody's gonna stumble on the cure for cancer!

(complete with diagrams even)

Shit, I figured that out months ago

ricerocket · Oct 16, 2002

It's because the 180 is a taller tire and you've effectively raised your gearing. It's like taking two teeth off the rear sprocket.

Actually, the 180's are generally taller than the 190s, but not so much to cause this to happen.

Have you done some suspension changes, put in some cheap gas, or been eating lots of pizza due to the short, cooler days? Any of these could be part of it.

HDTony · Oct 16, 2002

ricerocket said:
Actually, the 180's are generally taller than the 190s, but not so much to cause this to happen.

I thik its the other way around. a 190 would have a 95mm sidewall and a 180 would have a 90mm sidewall. so the 180 would be sorter.

ricerocket · Oct 16, 2002

That's the sidewall height, what about in the center of the tread?

BusaDave · Oct 16, 2002

Bridgestone Tires BT010R BW TL

180/55ZR17 O/A Diameter = 24.7 Tread Width = 7.3
190/50ZR17 O/A Diameter = 24.7 Tread Width = 7.5
200/50ZR17 O/A Diameter = 24.9 Tread Width = 7.8

Meulen · Oct 16, 2002

BusaDave said:
Bridgestone Tires BT010R BW TL

180/55ZR17 O/A Diameter = 24.7 Tread Width = 7.3
190/50ZR17 O/A Diameter = 24.7 Tread Width = 7.5
200/50ZR17 O/A Diameter = 24.9 Tread Width = 7.8

So off the rim they are the same heighth jsut different width. That doesn't help us on what happens after they are put on the rim.

HDTony · Oct 16, 2002

Less rubber equals less tire.

Meulen · Oct 16, 2002

GsxrTony said:
Less rubber equals less tire.

I'm sticking with my theory. Ricerocket confirmed it too. We all agreed they tuck the sidewalls of the 190 in a bit wich would give it a bigger contact patch when inflated and a smaller diameter

HDTony · Oct 16, 2002

Hey I was just lookin at the bridgstone website. Are you guys talking about 180/55/17 vs. 190/50/17 or 180/50/17 vs. 190/50/17?

The fisrst one your right it would be almost identicle due to plus one minus one sizing. But the second one which I thought we were talking about would have a difference.

Meulen · Oct 16, 2002

GsxrTony said:
Hey I was just lookin at the bridgstone website. Are you guys talking about 180/55/17 vs. 190/50/17 or 180/50/17 vs. 190/50/17?

The fisrst one your right it would be almost identicle due to plus one minus one sizing. But the second one which I thought we were talking about would have a difference.

With the Bridgestone I was looking at the first

HDTony · Oct 16, 2002

ok then that makes sence. If you take one size away from the cross sction and add one to the profile then it will have almost the same overall diameter. but will be slighly narrower. And should give you about the same contact patch, I think the difference would be negligable in that comparison. Most likey it would take someone like Miguel Duhamel to notice a major difference.

Meulen · Oct 16, 2002

GsxrTony said:
ok then that makes sence. If you take one size away from the cross sction and add one to the profile then it will have almost the same overall diameter. but will be slighly narrower. And should give you about the same contact patch, I think the difference would be negligable in that comparison. Most likey it would take someone like Miguel Duhamel to notice a major difference.

tony your almost there. Now take into reason that the design of the 190 tucks the sidewall in to give you more tread with and then when you inflate the tire you get more diameter with the 180 and less of a contact patch due to the extreme profile inflation provides.

if you don't believe me I'm riding over to your house tonight so I can show you and smack you upside the head:laughing :laughing :rofl

HDTony · Oct 16, 2002

They dont design it to tuck the sidewall. That is caused by the rim size. you put a wider tire on a same size rim, the sidewall is gonna tuck.

No where in thier literature does it say something like, "oh on this size tire we desisgned the sidewall to tuck so youll have a better contact patch." thatis all relational to squezzing it n the rim

And if your comin over to smak me down you better bring a lunch, its gonna be a long night

Meulen · Oct 16, 2002

GsxrTony said:
They dont design it to tuck the sidewall. That is caused by the rim size. you put a wider tire on a same size rim, the sidewall is gonna tuck.

No where in thier literature does it say something like, "oh on this size tire we desisgned the sidewall to tuck so youll have a better contact patch." thatis all relational to squezzing it n the rim

And if your comin over to smak me down you better bring a lunch, its gonna be a long night

Grrrrrrrrrrrrrrrrrrrrrr that's it. Your gonna get it.:mad :mad :mad

LOL:jester :jester

ricerocket · Oct 17, 2002

Crazy said:
So off the rim they are the same heighth jsut different width. That doesn't help us on what happens after they are put on the rim.

You don't have that many miles on the new tires yet, put it on a rearstand and get out the megacrometer. I'm not an expert on this at all. I'm just going by what has been passed on to me through forums much like this.

bluebusa60544 · Oct 17, 2002

I had a 160 on a 5.5" rim on my '92 GSXR. It gave you more contact area when straight up and less when leaned. The cross section was almost square. It was harder to turn in because you were rolling thebike up on the corner so to speak. But I think a 190 would give you a better contact patch at any angle over a 180 because they are both designed for a 6" rim. The advantage to a 160 for drag racing comes from the fact the sidewalls are pulled out to make it fit a rim it was not designed for. If my bike should have a 190 I will use a 190. Using anything else will compromise something.

Tire size comparison, (split from the dano thread)

HDTony

Meulen

vtr996

Underdog

HDTony

ricerocket

HDTony

ricerocket

BusaDave

Meulen

HDTony

Meulen

HDTony

Meulen

HDTony

Meulen

HDTony

Meulen

ricerocket

bluebusa60544

Top Contributors this Month

Recommended Communities