[Franco Cozzo]

There's a bit more to wiper performance than just the blade too, especially when you get uneven wipes or jumping across the screen.

Who remembers the old metal backed refills? Those enable you to refill shagged blade assemblies.

The pivots on the wiper blade assembly are critical to wiper performance, they lose their tension over time and if you put wiper refills in them when they're shagged then your refills last **** all.

Same with the tension provided by the spring in the wiper arm itself, wiper arms lose their tension holding them onto the windscreen as the spring ages.

That in itself, the tension of the spring in the wiper arm and the pivots on the blade assembly is a bit of a calculation for optimum blade life and performance on behalf of the people who designed the wiper system.

Spring in the wiper arm and a wiper blade that the pivots have seen better days you end up with poor life and poor performance before you start doing the jump across the screen and streaks dramas real early.

With refills dropping off it's alleviated the dramas with shagged pivots on the blade assemblies because the whole thing is replaced every time now.

If you're finding it doesn't matter what blade you fit to the arms, if you're getting poor life out of them it could be time for new wiper arms.