Look for the sticker on either the driver door pillar or the door itself. There you should find information such as tire size, axle loading, year and month of manufacture, weight, etc.
On mine it is 185/ 60/R14
51r
http://www.dragtimes.com/Honda-Civic-Tires-m18-n214.html
The speakers in a 1993 Honda Civic are 6 1/2 inches. These cars can fit 6x9 inch speakers with little to none modification.
Standard speaker size for a 2001 Honda Civic is 6.5 inches. The units are located in places with ample room, due to this speakers can be easily upgraded in size.
P 195/75/13
P195/60/R15 is the OEM version for Honda Civic 2005 EX
185/70-R14
The engine size of the Honda Civic is 1.8 litres.
185/65/R15
Its either a 1.5 or 1.6 depending on which model you have.
the lug nut size on your Honda civic is a 19mm .....
The 2003 Honda Civic has a 1.7 L base engine size.