Dunno. I've never personally owned a Civic Si. I double checked
tirerack.com again and I did the search under "Shop for Tires," selected
"Honda" and "1987." Then selected "Civic Si Hatchback" which stated the OE
was 175/70-13 for this car. However when I searched the CRX Si, it listed
the 185/60-14 as you stated. The plot thickens!

Haven't seen a reply from the OP (Tina) yet, but what does the sticker on
the door indicate?
Either way, go with the previously stated sizing method. It works.

Good luck!
-Dave


"Dan Knaus" <knaus@infionline.net> wrote in message
news:bbtljvshg6cv39711v38fr7upvd1e2ftgb@4ax.com...
> Hmm, this gets interesting. I'm the only owner of this car. Just
> took a look at the data label on the driver's side door and 2 sizes
> are listed: The first is the 175/70 R13 and the second is the 185/60
> R14. Took a look at tirerack.com and it said 185/60 R14. Wondering
> now if the 14 inch was an option, not standard?
>
> Dan
>
> On Tue, 12 Aug 2003 22:00:38 GMT, Randolph <trash@junkmail.com> wrote:
>
> >The service manual specifies 175/70 R 13 82T for the 1500 Si hatch back.
> >175/70 R 13 for the 1500 DX hatchback and 165/70 R 13 for the base 1300
> >hatch. This is also what is listed on the web site of Goodyear for that
> >car. Are you sure your car has the original tire size?
> >
> >Dan Knaus wrote:
> >>
> >> I believe the tire sizes given below are for the non-SI versions. I
> >> just went outside and looked at my '87 SI - the tires are 185/60R14s
> >> and I haven't changed sizes. My manual is in the garage, but again,
> >> the the non-SIs have 13 inch tires, the SI has 14 inch.
> >>
> >> Dan
> >>
> >> On Sat, 09 Aug 2003 16:24:25 GMT, Randolph <trash@junkmail.com> wrote:
> >>
> >> >I have the Honda service manual for the 1987 Civic (US model) and it
> >> >confirms what the previous poster said. 175/70R13 82T to be precise.
> >> >
> >> >
> >> >
> >> >David L wrote:
> >> >>
> >> >> According to Tirerack (www.tirerack.com), the original tire size for
the '87
> >> >> Civic Si hatchback is 175/70-13.
> >> >>
> >> >> Not really good at math, but there is another website
> >> >> (www.miata.net/garage/tirecalc.htm) which gives the calculations
you're
> >> >> looking for in different size tires. Based on the change to
185/65-15 your
> >> >> speedometer would read 8% too slow. When your speedometer reads
60mph
> >> >> you're actually traveling at 64.8mph.
> >> >>
> >> >> If you want to change to a 15" tire, get the 195/50-15. That would
only
> >> >> make your speedometer read .1% too slow, so if your speedometer
reads 60mph
> >> >> you're actually traveling at 60.1mph. You can also opt for
185/60-14 which
> >> >> would read .4% too slow so when your speedometer reads 60mph you're
actually
> >> >> traveling at 60.3mph. All of the above info was gathered from the
two
> >> >> websites quoted.
> >> >>
> >> >> It'll probably be more trouble that what it's worth to try and
change the
> >> >> speedo. Upgrade to the appropriate corresponding tire size instead.
> >> >>
> >> >> Hope this helps,
> >> >> -Dave
> >> >>
> >> >> "Tina Venne" <TinaVenne@comcast.net> wrote in message
> >> >> news:f959jv0rgaa731mf5avckpqu4ac1c780ko@4ax.com...
> >> >> > Can anyone tell me what the original size tires were from the
factory
> >> >> > on the 1987 Civic Si?
> >> >> >
> >> >> > If someone is good at math, can you tell me what the speed
difference
> >> >> > would be, as indicated on the speedometer, between this stock size
and
> >> >> > the currently installed P185-65-R15 at, say, 60mph?
> >> >> >
> >> >> > Also, where can one obtain the driven gear (or whatever it is
called)
> >> >> > that would correct the speedometer for the above current tire
size?
> >> >> >
> >> >> > Thanks a bunch.
>