Good tyres

[tofufi]

Originally Posted by AllHailKingVolvo

my diesel will soon receive a set of four, it currently has a set of 185/65/R15s on it which of course are smaller than standard and make it a bit revvy at motorway speeds.

To be honest I've always found my diesel to be a bit revvy. About 2900rpm at 70 according to the rev counter. A 3.31 diff got that down to around 2700 (original is 3.54), gave me another 1-2mpg and made it a bit quieter.

[AllHailKingVolvo]

Originally Posted by tofufi

To be honest I've always found my diesel to be a bit revvy. About 2900rpm at 70 according to the rev counter. A 3.31 diff got that down to around 2700 (original is 3.54), gave me another 1-2mpg and made it a bit quieter.

That's very interesting...I did wonder whether a different ratio diff would help. Did changing the diff alter performance off the line much?

[Laird Scooby]

Originally Posted by AllHailKingVolvo

That's very interesting...I did wonder whether a different ratio diff would help. Did changing the diff alter performance off the line much?

I don't know about Jims car Phil but i had his old axle (3.54) to fit on my 760 (originally 3.91 ) so it's now about 10% higher. No real difference off the line overall, maybe a smidge slower 0-30 but because the gears are longer now it is now quicker in the upper range.

How that would translate to a similar increase on a diesel i'm not sure.

[bob12]

I am fortunate to have a local family tyre firm (Martins Tyres) where I live who have supplied my tyres for many years. Locals and those in the know liken fitting new tyres at Martins to an F1 pitstop as they have several bays and use industrial strength trolley jacks!

I always go for a medium range tyre. For many years I have fitted Champiro 195 x 65 R15's on the 745 and find them very good in all conditions (South East!), long wearing with a very acceptable road noise on all types of road.

On the V70 I fitted a pair of Nexen 205 x 50 R16's on the front for the MOT in January. The car had Nexen's all round previously which seemed OK so I kept with the more modern version (N'Blue) of the previous ones. No problems.

Bob

[tofufi]

Originally Posted by AllHailKingVolvo

That's very interesting...I did wonder whether a different ratio diff would help. Did changing the diff alter performance off the line much?

If anything, it's ever so slightly slower off the mark. Didn't remember noticing much to be honest, but I don't drive it hard, almost all motorway work for mine.

There is only one motorway hill I've found where it can't maintain 70 on the cruise with the taller diff. But I don't remember trying it before the diff swap

[sam1]

I have Continental Eco Contact 6 on my 940. I have achieved 36mpg over a couple of tanks albeit driving carefully and 60mph on the motorway. Can't fault them but only done about 5k on them so far.

I have the latest Michelin cross climate on the xc70 and can't really fault them either, quite impressive. I had Michelin pilot sport 4 tyres on a quick project car last year and they were the grippiest tyre I've ever experienced.

A few years back when I had a v70 i was getting best part of 40k from a set of pirelli p7 but they were not particularly grippy, especially in the wet / cold