Author Topic: Going from a 180/55 to a 170/60  (Read 2922 times)

0 Members and 1 Guest are viewing this topic.

#10

Offline Paul2bikes

  • Tiger God
  • *****
  • Posts: 9426
  • Bike/Model: 2014 Tiger Sport 1050
  • City / Town: High Peak
  • Country: gb
Re: Going from a 180/55 to a 170/60
Reply #10 on: 03 February, 2021, 06:02:13 PM
*Originally Posted by tiggersteve [+]
where does that come from ???

Maths m8, simple maths.  :745:  :031:
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#11

Offline tiggersteve

  • Tiger God
  • *****
  • Posts: 8768
  • Bike/Model: 1050,1290,now bikeless
  • City / Town: doddington cambs
  • Country: gb
Re: Going from a 180/55 to a 170/60
Reply #11 on: 03 February, 2021, 09:33:38 PM
Well lets have it then, Mr smart ar#e?
never too old to learn

#12

Offline ZuluTiger

  • Tiger Supporter
  • Tiger God
  • *
  • Posts: 2845
  • Bike/Model: Tiger 1050 ABS
  • City / Town: Suwanee, GA
  • Country: us
Re: Going from a 180/55 to a 170/60
Reply #12 on: 03 February, 2021, 09:56:25 PM
Paul was wrong. It's actually 18.84956.  :745: I have a little spreadsheet I made up to do this calc, pity we can't swap files of that nature here. If anyone wants it just PM me with an email address and I'll send it off. It looks like the pic below, just needs the data to be entered and you can see the formulas that are used.

I also found this online calculator I've used previously:

https://robrobinette.com/tire_diameter.htm
Last Edit: 03 February, 2021, 10:48:21 PM by ZuluTiger

#13

Offline Paul2bikes

  • Tiger God
  • *****
  • Posts: 9426
  • Bike/Model: 2014 Tiger Sport 1050
  • City / Town: High Peak
  • Country: gb
Re: Going from a 180/55 to a 170/60
Reply #13 on: 04 February, 2021, 07:02:22 AM
Spot on ZT but dinna fergit last bit.
78.6388
77.8967
0.7421/78.6388 = 0.009436817 x 100 = 0.9437 or near as feckit 1% less.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#14

Offline ZuluTiger

  • Tiger Supporter
  • Tiger God
  • *
  • Posts: 2845
  • Bike/Model: Tiger 1050 ABS
  • City / Town: Suwanee, GA
  • Country: us
Re: Going from a 180/55 to a 170/60
Reply #14 on: 04 February, 2021, 11:51:55 AM
Yessir, quite right. The circumference change by fitting this alternative tire is negligible as you have pointed out. The contact patch will be smaller (slightly) but the overall effect will be minor. Unless the OP is after a particular tire it hardly seems to be worth the effort.

#15

Offline Paul2bikes

  • Tiger God
  • *****
  • Posts: 9426
  • Bike/Model: 2014 Tiger Sport 1050
  • City / Town: High Peak
  • Country: gb
Re: Going from a 180/55 to a 170/60
Reply #15 on: 04 February, 2021, 12:20:30 PM
As I said before, those sizes have more adventure bike type tyres.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

#16

Offline bigchris2020

  • Tiger Pro
  • ***
  • Topic Author
  • Posts: 197
  • Bike/Model: Tiger 1050
  • City / Town: Hampton Ga
Re: Going from a 180/55 to a 170/60
Reply #16 on: 07 February, 2021, 04:48:56 AM
WOW! You guys really went deep, lol I was just wondering cause I found a really good deal on a closeout tire but the only size that was left is 170/60. So I gather from all the info the affects are minimum. I really appreciate everyone that chimed in, thanks.

#17

Offline Rhead

  • Tiger God
  • *****
  • Posts: 4509
  • Bike/Model: 07
  • City / Town: Long Island, N.Y
  • Country: us
Re: Going from a 180/55 to a 170/60
Reply #17 on: 07 February, 2021, 06:21:44 PM
my 96 trophy came with a 170. Replaced it with a 180. Handled much better. Much more linier, and stable.

 



reconstruction