On today's model, the Alto K10 tyre size reads 145/80 R13 for every buyer, so the Std, LXi, VXi, VXi+ and the S-CNG models all roll on the same tall, narrow tyre over a 13 inch steel rim. The earlier K10, the one with the older body, used a wider and lower 155/65 R13 instead.
Both share a 13 inch rim, yet the tyres are not swapped freely: the new k10 tyre size stands about 30 mm taller overall. Check which body style is parked in front of you, then read the matching row below.
Alto K10 fitment card
- Tyre size
- 145/80 R13 on every current variant, petrol and CNG
- Earlier version
- 155/65 R13 on every variant
- Wheels
- 13 inch steel; centre cap (Std, LXi), full wheel cover (VXi, VXi+)
- Tyre pressure (cold)
- Front 32 psi, rear 32 psi; check the driver door sticker
- Spare
- 145/80 R13 on a 13 inch steel wheel
- PCD
- 4 x 100 mm, centre bore 54.1 mm
- Wheel cap
- 13 inch full cover
- Wiper blades
- 18 inch driver side, 16 inch passenger side (check the old blades)
- Fog lamps
- Not fitted on the current version; no bumper slot
Alto K10 tyre size by variant
| Variant | Front | Rear | Wheel |
|---|---|---|---|
| Std, LXi | 145/80 R13 | 145/80 R13 | 13 inch steel, centre cap |
| VXi, VXi+ (manual and AGS) | 145/80 R13 | 145/80 R13 | 13 inch steel, full cover |
| LXi S-CNG, VXi S-CNG | 145/80 R13 | 145/80 R13 | 13 inch steel |
| Earlier version, every variant | 155/65 R13 | 155/65 R13 | 13 inch steel |
In other words the alto k10 vxi tyre size is identical to the entry car; the top trim only dresses the same steel rim with a full wheel cover. There is no factory alloy on any version.
What 145/80 R13 tells you
Read left to right. A 145 mm tread width keeps rolling drag low, which suits a one litre engine tuned for mileage. The 80 is the aspect ratio: each sidewall is 80 percent of 145, or 116 mm, so there is a deep cushion between rim and road. R is radial, and 13 is the alto k10 wheel size in inches. That tall wall is why the new car rides broken lanes better than the earlier model on its lower 65 series rubber. For every other sidewall marking, see how to read a tyre size.
Old K10 versus new K10 tyres
| Version | Size | Overall diameter |
|---|---|---|
| Current | 145/80 R13 | 330.2 + 232 = 562.2 mm |
| Earlier | 155/65 R13 | 330.2 + 201.5 = 531.7 mm |
The gap is about 5 percent, beyond the usual 3 percent limit. Putting the earlier size on a new car makes the speedometer read high and lowers ground clearance; going the other way can rub the arch liners of an older car. Buy the size your own sidewall shows.
Upsizing the new Alto K10
Owners who fit 14 inch alloys usually look for a tyre near 562 mm tall:
| Size | Sum | Change |
|---|---|---|
| 155/65 R14 | 355.6 + 201.5 = 557.1 mm | minus 0.9 percent |
| 165/60 R14 | 355.6 + 198 = 553.6 mm | minus 1.5 percent |
Each sits inside the safe band, though they demand 14 inch rims drilled 4 x 100 mm, and tyres rated to carry at least the factory load. Expect a firmer ride and slightly heavier steering when parking. Run other sizes through the tyre size calculator, and see rim choices on the Alto K10 alloy wheels page.
The spare wheel
Hidden beneath the luggage floor is a fifth 145/80 R13, mounted on steel and matching the four on the road. Since it is a true fifth tyre, slot it into a five tyre rotation and all of them wear out together. Give it the same cold pressure as the others when you check the set.
Signs the tyres need changing
- Tread worn level with the small wear bars across the grooves.
- Spider web cracking on the wall or at the base of the tread blocks, typical of a K10 left in an open parking lot all week.
- A bubble, a slash that exposes cords, or air that keeps vanishing near the rim edge. Have a tyre shop look at it before you drive on.
- A date code showing the tyre is more than about six years old.
Learn to decode the four digit code on our tyre manufacturing date guide.
Shopping for 145/80 R13
This size is widely stocked because several small cars use it. Ask for a tubeless radial, check the date code is recent, and replace tyres in axle pairs. Fill them to the figure on our Alto K10 tyre pressure page. Looking after the smaller engined sibling as well? It runs 12 inch rubber, explained under Alto 800 sizes. All other cars are gathered in the car tyre size section.
Questions owners ask
Which tyre fits the new Alto K10?
Every new K10, AGS automatic and S-CNG included, uses 145/80 R13; that is the new alto k10 tyre size.
Older body style: which alto k 10 tyre size applies?
All variants of the earlier model came with 155/65 R13. It is wider and lower than the current tyre.
Is the Alto K10 VXi tyre size bigger than the LXi?
No. LXi and VXi share 145/80 R13 rubber and the same steel 13 inch rim. The VXi and VXi+ add a full wheel cover.
Can I put 155/65 R13 on the new K10?
It fits the rim, but it is about 5 percent shorter overall. The speedometer would read high and ground clearance drops, so stick with 145/80 R13.
Does the Alto K10 have alloy wheels?
Not from the factory. The maker sells a 13 inch accessory alloy, and many owners fit aftermarket alloys.
Are Alto K10 tyres tubeless?
Yes. Both the earlier and current K10 use tubeless radial tyres.