Kumho Ecsta PS71 vs PS91 - Test Data Comparison [2024]

Fuel Efficiency

The US Department of Energy estimates that around 25% of the fuel consumption of a vehicle is attributable to the tyres. That's a lot, and it means that choosing fuel efficient tyres can save you quite a bit of money.

The Ecsta PS71 tyres rank a D on a scale of A to E in the official fuel efficiency tests carried out by the EU (they call these rolling resistance tests).

The Ecsta PS91 tyres also get a grade of D.

As their fuel efficiency grade is the same, expect negligible differences in fuel consumption between them.

Here's a graph comparing the Ecsta PS71 and Ecsta PS91 tyres for fuel efficiency (1 = Grade E, 5 = Grade A).

Grip & Handling

We'll now take a look at how these tyres compare in terms of grip and handling.

A good measure of this is 'wet grip', which is an indication of how well the tyres will allow the vehicle to come to a stop in wet conditions.

The Ecsta PS71 tyres rank a A on a scale of A to E in the official fuel tests carried out by the EU.

The Ecsta PS91 tyres, on the other hand, get a grade of A.

As their wet grip grade is the same, expect negligible differences in terms of braking distance.

Here's a graph comparing the Ecsta PS71 and Ecsta PS91 tyres for wet grip (1 = Grade E, 5 = Grade A).

Noise

Another key factor to consider when choosing a tyre is road noise. Once you're over about 40 km/h, the dominant source of noise you hear is from the contact of your tyres on the road.

There is a surprisingly wide variation in the amount of noise each tyre makes.

The Ecsta PS71 tyres produce 71.8 dB of road noise, which corresponds to a rank of B on a scale of A to C in the standardised testing done by the EU.

On the other hand, the Ecsta PS91 tyres produce 72.2 dB of road noise, which means a grade of B.

As their noise grade is the same, don't expect many differences in terms of cabin noise.

Here's a visual representation of how the Ecsta PS71 and Ecsta PS91 tyres stack up for noise (1 = Grade C, 3 = Grade A).

Based on the results of a number of tyre benchmarks, the Ecsta PS71 scores 4 out of 5 for comfort and the Ecsta PS91 scores 4 out of 5.

As per the UTQG guidelines, the Ecsta PS71 tyres have a treadwear rating of 320, whereas the Ecsta PS91 tyres have a rating of 260. This means that the Ecsta PS71 tyres will theoretically last 1.2 times as long as the Ecsta PS91 tyres.

As per the, the Ecsta PS71 and Ecsta PS91 tyres both have a traction grading of AA.

As per the UTQG system of tyre grading, the Ecsta PS71 and Ecsta PS91 tyres both have a temperature resistance grading of A.

For fuel efficiency, Ecsta PS71 score a grade of D, which is below average. Ecsta PS91 end up with a grade of D, which is below average.

More important is the wet grip, which gives you an indication of their traction and handling. In this regard, both the Ecsta PS71 and the Ecsta PS91 get a score of A, which is outstanding.

More important is the wet grip, which gives you an indication of their traction and handling. In this regard, Ecsta PS71 get a score of B, which is about typical. Ecsta PS91 end up with a grade of B, which is about typical.