Speedo accuracy
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Speedo accuracy
RedTide Wed Jun 30, 2010 1:23 pm
What can I expect with a GYTT 205/60-16 vs a Michelin 205/65-16?
RT
RT
RedTide- Number of posts : 20
Location : Georgia
Registration date : 2010-06-29
Re: Speedo accuracy
nodakbassmaster Wed Jun 30, 2010 1:40 pm
slight difference with the 65 being closer to right...
nodakbassmaster- Admin
- Number of posts : 1604
Age : 45
Location : Rapid City, SD
Registration date : 2007-12-15
Re: Speedo accuracy
meangrn1800 Fri Jul 02, 2010 4:31 pm
Try this site. Punch in your current tire size and your new tire size and it shows you all sorts of stuff
http://www.barretire.com/calculator.htm
http://www.barretire.com/calculator.htm
meangrn1800- Number of posts : 2
Location : Burnsville
Registration date : 2010-06-09
Re: Speedo accuracy
RedTide Sat Jul 03, 2010 8:08 am
I found a couple of others too. Looks I will go with a Michelin Hydroedge 205/65-16 as it will give me pretty accurate mph, compared to the stock or a 205/60-16. Plus a friend with a Retro had a MH and liked it much better than his current GYTT.
Thanks
Thanks
RedTide- Number of posts : 20
Location : Georgia
Registration date : 2010-06-29
Re: Speedo accuracy
ToMang07 Sat Jul 03, 2010 8:16 am
THAT is actually a pretty cool calculator...thx!meangrn1800 wrote:Try this site. Punch in your current tire size and your new tire size and it shows you all sorts of stuff
http://www.barretire.com/calculator.htm
ToMang07- Number of posts : 68
Location : Maine
Registration date : 2010-07-03
Re: Speedo accuracy
RedTide Sat Jul 03, 2010 8:26 am
This one works pretty good too. http://www.tacomaworld.com/forum/tirecalc.php
With the stock tire mine reads a -5 mph from actual speed via a GPS at 65 mph. The MH 205/65-16 looks like I should end up at about a +1~2 from actual speed at 65.
RT
With the stock tire mine reads a -5 mph from actual speed via a GPS at 65 mph. The MH 205/65-16 looks like I should end up at about a +1~2 from actual speed at 65.
RT
RedTide- Number of posts : 20
Location : Georgia
Registration date : 2010-06-29
Re: Speedo accuracy
ToMang07 Sat Jul 03, 2010 2:14 pm
Hmmmm......
Curious whether I should go with a 60 or a 65 now.....
Not sure where I have the 1300 FD already... and w/ the 200/66/16 metz I am running 1-2 OVER at 65 indicated.
I guess I ned to crunch the numbers....with the calculator and (gu)estimate which would be better....
Curious whether I should go with a 60 or a 65 now.....
Not sure where I have the 1300 FD already... and w/ the 200/66/16 metz I am running 1-2 OVER at 65 indicated.
I guess I ned to crunch the numbers....with the calculator and (gu)estimate which would be better....
ToMang07- Number of posts : 68
Location : Maine
Registration date : 2010-07-03
Re: Speedo accuracy
nodakbassmaster Sat Jul 03, 2010 2:18 pm
Probly the 60 then unless you wanna further raise the gear ratio and lower your RPMs at given speed....
nodakbassmaster- Admin
- Number of posts : 1604
Age : 45
Location : Rapid City, SD
Registration date : 2007-12-15
Re: Speedo accuracy
ToMang07 Sat Jul 03, 2010 2:26 pm
nodakbassmaster wrote:Probly the 60 then unless you wanna further raise the gear ratio and lower your RPMs at given speed....
I'm OK with lowering the RPM's....
It's losing torque that I'm worried about. That and messing up the speedo worse than it is.
ToMang07- Number of posts : 68
Location : Maine
Registration date : 2010-07-03
Re: Speedo accuracy
ToMang07 Sat Jul 03, 2010 2:34 pm
After plugging the numbers into the calculator, it basically says:
If speedo read 65, actual with the "60" would be 63.64.
If speedo read 65, actual with the "65" would be 65.62.
So basically, my speedo would be about correct id I go with the 60, but over a hair more if I go with the 65.
Im no good at ath, but wouldn't I lose torque if I add the taller tire?
If speedo read 65, actual with the "60" would be 63.64.
If speedo read 65, actual with the "65" would be 65.62.
So basically, my speedo would be about correct id I go with the 60, but over a hair more if I go with the 65.
Im no good at ath, but wouldn't I lose torque if I add the taller tire?
ToMang07- Number of posts : 68
Location : Maine
Registration date : 2010-07-03
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