[ausev] thoughts on tires

[Marc Kohler]

Mount the new set and move on down the road.  Your speedometer is probably
1/65th off anyway from absolute true so don't let that bother you.

As for increased friction or footprint, there are many other aspects that
effect your efficiency much more (driving habits, terrain, weather) that
will make the difference unnoticeable.

I say slap them on and get driving to get that EV grin back as soon as
possible.

You can always change them out later if you really notice a difference when
you have more change in your pocket.

My two cents.

Marc Kohler

 

From: ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On
Behalf Of chris clark
Sent: Thursday, January 22, 2009 8:39 AM
To: AustinEV News Announcements and General Discussion
Subject: [ausev] thoughts on tires

 

Now that Mark Witt's old Ranger EV is finally finished, I have to replace
the tires.  Unfortunately, I've spent all my money buying and working on
this thing and now, money for tires is pretty limited.  If I could afford
it, I'd just go by a new set of 225/70/15's like the ones it came with.
That's pushing $500, though, to get a set of good quality tires.  So here's
my question.  I have a new set of 235/70/15's that would cost me very little
to have mounted and balanced, but the tires are roughly 1/2" taller and
almost 1/2" wider, creating a little larger 'footprint' and distorting the
mileage/range computations slightly.  I've been told by Discount tire that
with the larger 235's, a speedometer reading of 65mph would actually be 66
mph.  So the calculations would be effected about 1/65 and there would be a
small increase in friction because of the larger footprint, at least this
makes sense to me instinctively.  And this begs the question "would one size
smaller tire decrease friction by having a smaller footprint?"  If the
answer is yes, there are many 215/70/15's or even 215/75/15's available at
salvage yards.  For some reason, though, 235/70/15's are very difficult to
find used.  Enough of my ramblings.  Any thoughts?

----- Original Message ----- 

From: Marc David Kohler <mailto:mkohler at austin.rr.com>  

To: 'AustinEV News <mailto:ausev at austinev.org>  Announcements and General
Discussion' 

Sent: Wednesday, January 21, 2009 7:24 PM

Subject: Re: [ausev] ReinCarNation

 

Welcome Gary.

We look forward to meeting you at the next AustinEV.org gathering.

Marc Kohler

 

  _____  

From: ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On
Behalf Of Gary Ellis
Sent: Wednesday, January 21, 2009 7:15 PM
To: ausev at austinev.org
Subject: [ausev] ReinCarNation

 

Hi,

My name is Gary Ellis and I just subscribed to the AustinEV mailing list as
I'm starting an EV conversion company, here in Austin, and wanted to
introduce myself.  Our company is called ReinCarNation -- please check-out
our web-site, when you have a chance.
http://www.rcnmotors.com

I'm very interested in meeting many of you at your next meeting, seeing your
EVs and showing you my electric Miata.  I have heard about Revolt Custom
Electric, but have yet to contact them to see what their experience has been
like.

Thanks and any feedback is welcome.

Gary
ReinCarNation
RCN Motors, LLC
http://www.rcnmotors.com

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