Hr78-15 > p225 75r15 hr70-15 > p225 70r15
Hi, a common size for those is P225/70R15 or P225/75R15 (my truck has this size)
Most likely P225/75R15
P225 75R15 102S
P225/75r15 102s
Xls p225/75r15 xlt p235/70r16
Factory Installed Tire Size is P225/75R15. Optional Tire Size is P235/75R15 which will give you a greater selection of tires.
Well, your 1990 Chevy Cheyenne came OE with P225/75R15 however, in this case you can use P235/75R15 it is more common and cost less. COO of TireTyre.com
The original tire size on a 95 Jeep Rio Grande is 15 inches. The recommended sizes for a stock model are P215/75R15 or P225/75R15.
The difference between a P225 75R 15 tire and a P235 75R 15 tire is the width of the tread and the height of the sidewall. The first number is the tread width in millimetres. The second number is the aspect ratio. That is the height of the sidewall as a percentage of the tread width. So it would be 225x75% fir example.
On a metric sized tire it is the tread width. Example, p225/75r15. The tread is 225 mm wide.
The P215 / 70 / R15 is 26.9 inches in diameter and the section width is 8.5 inches The P225 / 70 / R15 is 27.4 inches in diameter and the section width is 8.9 inches