Learning2race
Expert Class
Posts: 138
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posted May 29, 2008 06:19 AM
180 vs 190 tire - problem?
I've been lucky enough to have been given (free of charge!!) a tire that is essentially brand new.
Although there is only 10mm difference in the width of the tire, do I need to be worried about losing the bead on the wheel? I'll be using this tire exclusively for 1/4 mile (in order to save my street tire) and will be dropping the pressure to about 22-24lbs.
Thanks in advance for the feedback.
  
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted May 29, 2008 07:13 AM
no it works fine. my last shinko was a 200. i am replacing it with a 190 because i got a set for $160.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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kawabunga
Expert Class
Cogswell Cogs Installed
Posts: 284
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posted May 29, 2008 08:23 AM
The 180 will work fine with no issues. Actually at the strip a 180 works better than a 190 because of a larger contact patch. The 180 will trn in quicker than the 190 when riding in the twisties. Larger tires turn in slower. No bead issues at all.
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gms118
Expert Class
Posts: 258
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posted May 29, 2008 01:32 PM
Im running a 180 as well. No issues at all
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ninjaboy311
Zone Head
Posts: 940
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posted May 29, 2008 03:22 PM
Running a 180 since I started racing my ZX-14 in 2006 with no issues.
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bulldogprostock
Novice Class
Posts: 77
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posted May 29, 2008 04:01 PM
quote:
The 180 will work fine with no issues. Actually at the strip a 180 works better than a 190 because of a larger contact patch. The 180 will trn in quicker than the 190 when riding in the twisties. Larger tires turn in slower. No bead issues at all.
Most current literbikes come equipped with a 190/50 tire. The first thing most owners do is throw it away & put on a 180/55 or 190/55 tire. The reason for this is the 180/55 tire is a taller tire than the 190/50 & aids in the overall handling of the bike making it turn-in easier. The 190/55 is an even better choice as it gives you an even taller diameter so you get all the benefits & then some of the 180/55 plus way more rubber on the ground when leaned over (when compared to the 180/55). The downside is that the 190/55 tires are more expensive sometimes WAY more expensive than their 180/55 siblings & the taller the tire is the more you will have to adjust your bikes suspension geometry to make it handle properly (i.e. hold a line without putting pressure on the bars, not want to stand up on the brakes & not run wide on corner exit etc...). But if dragracing is you thing then I'd go the 200 route.
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2001 Busa, 2008 ZX14R, K6 GSX1000R
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fury
Expert Class
Posts: 427
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posted May 29, 2008 04:39 PM
quote:
quote:
The 180 will work fine with no issues. Actually at the strip a 180 works better than a 190 because of a larger contact patch. The 180 will trn in quicker than the 190 when riding in the twisties. Larger tires turn in slower. No bead issues at all.
Most current literbikes come equipped with a 190/50 tire. The first thing most owners do is throw it away & put on a 180/55 or 190/55 tire. The reason for this is the 180/55 tire is a taller tire than the 190/50 & aids in the overall handling of the bike making it turn-in easier. The 190/55 is an even better choice as it gives you an even taller diameter so you get all the benefits & then some of the 180/55 plus way more rubber on the ground when leaned over (when compared to the 180/55). The downside is that the 190/55 tires are more expensive sometimes WAY more expensive than their 180/55 siblings & the taller the tire is the more you will have to adjust your bikes suspension geometry to make it handle properly (i.e. hold a line without putting pressure on the bars, not want to stand up on the brakes & not run wide on corner exit etc...). But if dragracing is you thing then I'd go the 200 route.
Thanks for the input...
Always lookin for more information on tires.
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ninjaboy311
Zone Head
Posts: 940
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posted May 29, 2008 05:06 PM
quote:
But if dragracing is you thing then I'd go the 200 route.
Why? A 200 is heavier and adds rotating mass which can slow you down. A 200 gives no more traction than the 180 or 190.
Sitting at 69" with a 180-55 Shinko U-soft, I was able to get a 1.33 60 foot. The 180 works!!
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BlackMagic14
Needs a job
Posts: 2058
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posted May 29, 2008 05:27 PM
Patrick I was thinking the same thing, this guy makes a very smart sounding post then says something stupid like that LOL
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ninjaboy311
Zone Head
Posts: 940
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posted May 29, 2008 05:57 PM
quote:
Patrick I was thinking the same thing, this guy makes a very smart sounding post then says something stupid like that LOL
Yea I know, everything he said was right on until the last sentence.
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Schnitz Racing Sponsored Rider
8.74 @ 152 on stock motor and MR9 (Muzzy Powered), 205 lbs suited
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bulldogprostock
Novice Class
Posts: 77
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posted May 30, 2008 03:58 PM
quote:
quote:
Patrick I was thinking the same thing, this guy makes a very smart sounding post then says something stupid like that LOL
Yea I know, everything he said was right on until the last sentence.
Sorry guys I'm a roadracer, but you might be suprised by weighing tires sometime. Tire weight is dependent upon construction and belt materials. I know of several 190/55 tires that actually weigh less than some 180/55 tires. But to your point, although crudely made, I don't know shit about 9 second events. It takes me longer than that to get down the back straight at Mid-Ohio. I guess, from the comments, that the Shinko 200 and others must be for looks only? Teach me oh Masters.
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2001 Busa, 2008 ZX14R, K6 GSX1000R
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