Quickie Question re Rolling Roads. (Not an Anorak Moment!)

[flat4phil]

Looking for confirmation before I blurt out on another forum on the subject of Rolling Road runs.

I understood that the correct procedure requires the tyre pressure to be increased (as noted on the printout) - just wondered with so many on here with experience of dyno's and RR's if this is considered good practice - as so far, I appear the only numpty who has taken any note of this. I thought it was necessary due to the rolling resistance of the rollers?

[wrxmania]

Never been done at any R/R session I have been at and never heard the engineers mention it should be done.

Brian []

[ANDYJDMSTI]

When i had mine done i just let them strap the t@rt down and cane it! []

[craigwrx]

Never been done at any R/R session I have been at and never heard the engineers mention it should be done.

Brian []

Same here .....

[ali37]

When we had the RR shootout about 6 weeks ago at Japerformance every car had their tyre pressures adjusted before the run and put back to normal when finished.

As it was my first RR run I didn't think much about it at the time.

[colin_ross]

Does it not have something to do with the style of rollers? Single drum ones are not as sensitive but the more common twin drum ones have a tendancy to "pinch" the tyres and that can add friction and give a false reading.

Or am I just talking out my @rse as usual?