timbo
Member
Until recently we owned two Navaras, both 3l diesel STR. One we were selling, the other we had recently bought. The Navara we just sold was a 2003 factory standard with no modifications except bullbar and towbar. It had done about 140,000km.
The other Navara is a 2007 and has done around 70,000. Apart from the usual bullbar, towbar modifications it also has a steel canopy and tray, snorkle and slightly larger tyres.
Now my query is that the 2003 Navara had far more power at both take off/ low speeds and cruising/higher speeds as well as better fuel economy- 10l/100km compared to 13.5/100km for the 2007 Navara. Now I realise the 2007 Navara weighs about 400kg more (I weighed both)it has about 0.322m2 of wind resistance (canopy higher & wider than cab) and the tyres are about 5% bigger in diameter/circumference than original tyres (265/75/R16 compared to 255/70/R16)
Does all of this equate to such a dramatic differnce in power and economy????
I used to own a Hilux with a steel tray and even with it loaded up it made little difference to the fuel economy.
Do bigger tyres mean better fuel economy when cruising but worse when accelerating???...
I'm interested in any views or opinions but if anybody has any real life experience with any of these factors or any hard data that would be great! If you've got this far, thanks for listening!
The other Navara is a 2007 and has done around 70,000. Apart from the usual bullbar, towbar modifications it also has a steel canopy and tray, snorkle and slightly larger tyres.
Now my query is that the 2003 Navara had far more power at both take off/ low speeds and cruising/higher speeds as well as better fuel economy- 10l/100km compared to 13.5/100km for the 2007 Navara. Now I realise the 2007 Navara weighs about 400kg more (I weighed both)it has about 0.322m2 of wind resistance (canopy higher & wider than cab) and the tyres are about 5% bigger in diameter/circumference than original tyres (265/75/R16 compared to 255/70/R16)
Does all of this equate to such a dramatic differnce in power and economy????
I used to own a Hilux with a steel tray and even with it loaded up it made little difference to the fuel economy.
Do bigger tyres mean better fuel economy when cruising but worse when accelerating???...
I'm interested in any views or opinions but if anybody has any real life experience with any of these factors or any hard data that would be great! If you've got this far, thanks for listening!