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Bruce Wayne Samba Member
Joined: May 15, 2007 Posts: 1210
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Posted: Wed Jul 18, 2012 8:31 pm Post subject: |
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1621 wrote: |
Bruce Wayne wrote: |
so my question is: I'm running 195/75/14's now,how much of a bigger "footprint" will I get with the 205/70/15 Nokian WRC's? will the Nokian's be taller,wider? |
I like using the Miata tire calculator. Just plug in your numbers and it will aslo give you a visual representation.
http://www.miata.net/garage/tirecalc.html |
cool,thanks.
14' tire I'm running now
sidewall 5.4 inches
radius 12.4 inches
diameter 24.7 inches
circumference 77.7 inches
revs/mile 815
15' Nokian
sidewall 5.6 inches
radius 13.1 inches
diameter 26.3 inches
circumference 82.6 inches
revs/mile 767 |
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BIRD84WESTY Samba Member
Joined: June 16, 2007 Posts: 86 Location: Boise, ID
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Posted: Thu Jul 19, 2012 12:04 pm Post subject: Nokians |
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I went with the Nokian WRC Van, 205/65/15 on a Mercedes wheel, I love the tires, and that size is really close to what stock total wheel/tire diameter would be, speedo when checked with a GPS is right on. Excellent tire, no regrets, very quiet, great handling, all around the best tire I have used so far for my van. _________________ 1984 Westy w/Bostig in the trunk |
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dogcoves Samba Member
Joined: September 09, 2005 Posts: 266 Location: Santa Cruz, CA
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Posted: Fri Apr 12, 2013 4:04 pm Post subject: |
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I've been driving on Michelin Agilis 205/65R15 on my 2WD 87 Westy for the last four years and have been pretty happy with them. My only complaint is they are fairly hard rubber. I just put GW 1.5 Lift Springs on and its time to get new tires. Thinking of going with the Nokian 205/70/15C Hakka C.
Wondering if going from a size 205/65 to a 205/70 will cost me in highway speed. Van Cafe says it will drop you rpm a tiny amount. How much is a tiny amount? _________________ Current VW: 1987 Westfalia
My Past Volkswagens:
1958 karmann ghia
1963 Beetle
1963 Westfalia
1966 Westfalia
1970 Beetle
1970 Westfalia |
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jerrydog411 Samba Member
Joined: September 28, 2009 Posts: 388 Location: North Vancouver, BC
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Posted: Fri Apr 12, 2013 4:47 pm Post subject: |
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dogcoves wrote: |
I've been driving on Michelin Agilis 205/65R15 on my 2WD 87 Westy for the last four years and have been pretty happy with them. My only complaint is they are fairly hard rubber. I just put GW 1.5 Lift Springs on and its time to get new tires. Thinking of going with the Nokian 205/70/15C Hakka C.
Wondering if going from a size 205/65 to a 205/70 will cost me in highway speed. Van Cafe says it will drop you rpm a tiny amount. How much is a tiny amount? |
~ 3% - example ... if you are at 3500 rpm in 4th @ 60 mph with 65s ... you will drop to just under 3400. Conversely, if you maintained your 3500 rpm in above example, you will now be traveling @ ~62 mph.
I have the 205/70/15s and love them ... mine are the WR C van ... came size / guts w different tread (all weather). Van Cafe carries them ... not sure if in stock right now but hey ... your nearby. |
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gl98115 Samba Member
Joined: April 22, 2011 Posts: 263 Location: Seattle, WA
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Posted: Fri Apr 12, 2013 4:49 pm Post subject: |
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dogcoves wrote: |
I've been driving on Michelin Agilis 205/65R15 on my 2WD 87 Westy for the last four years and have been pretty happy with them. My only complaint is they are fairly hard rubber. I just put GW 1.5 Lift Springs on and its time to get new tires. Thinking of going with the Nokian 205/70/15C Hakka C.
Wondering if going from a size 205/65 to a 205/70 will cost me in highway speed. Van Cafe says it will drop you rpm a tiny amount. How much is a tiny amount? |
The math is pretty straightforward:
Tire width (mm) / 25.4 (mm/inch) * aspect ratio (%) * 2 + wheel diameter (inch) = nominal tire diameter (inch).
For example 205/65-15
205/25.4 * .65 * 2 + 15 = 25.5 inches
and 205/70-15
205/25.4 * .70 * 2 + 15 = 26.3 inches
Your rpm at a given speed will change by (25.5 - 26.3)/25.5 * 100 = - 3.1%
(Edit: I'm a slow typist.) _________________ '87 faux-Syncro Westy w/ 2.3l GoWesty WBX |
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Jake de Villiers Samba Member
Joined: October 24, 2007 Posts: 5911 Location: Tsawwassen, BC
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dogcoves Samba Member
Joined: September 09, 2005 Posts: 266 Location: Santa Cruz, CA
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Posted: Sat Apr 13, 2013 11:36 am Post subject: |
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Thats a great site - thanks! _________________ Current VW: 1987 Westfalia
My Past Volkswagens:
1958 karmann ghia
1963 Beetle
1963 Westfalia
1966 Westfalia
1970 Beetle
1970 Westfalia |
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