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.