 | Home > Puma (Tdci) > Do MT tyres affect MPG much |
 
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| NCTT Member Since: 07 Apr 2008 Location: ESSEX Posts: 229  
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as above do you think it makes diff , or minimal , any one ever actually checked please
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8th Feb 2022 8:06am |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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They probably do to an extent - a couple of MPG, perhaps? There are so many other factors though, that it's difficult to get a definitive answer. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia Last edited by LandRoverAnorak on 8th Feb 2022 9:06am. Edited 1 time in total |
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8th Feb 2022 8:19am |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 970  
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Compared to a standard road tyres I believe they make a vast difference to your fuel consumption, similar to variations of inflation pressure. They also make a big difference to road noise, road holding and ride comfort. Ride like you stole it!! If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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8th Feb 2022 8:33am |
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| AMBxx Member Since: 24 Jul 2016 Location: York Posts: 1031 
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It depends (don't you just hate that!).
If you're driving around at 20-40mph, you'll see no difference at all. If you're doing 70mph on the motorway, you'll get slightly worse consumption. I was very disappointed in the tiny difference going to more road-oriented tyres made to consumption, but very pleased with the reduction in road noise at speed. |
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8th Feb 2022 8:37am |
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| camelman Member Since: 27 Feb 2013 Location: Peak District Posts: 3372
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Im running 35inch KM3s and a 2 inch lift on a 2.2 110
Normal mpg is now 23-24 where I used to get 26 previously.  |
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8th Feb 2022 8:47am |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 970
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So if measuring against your 23mpg figure, that’s nearly a 13% reduction in fuel efficiency Ride like you stole it!!
If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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8th Feb 2022 8:56am |
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| Angus_Beef Member Since: 30 Apr 2015 Location: Oslo Posts: 434  
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It does depend on a lot of variables, but overall, slightly worse.
I changed 235/85 Contis for 255/85 KM3s for August and September, then to 235 hakkapeliittas in October. Aside from one outlier that was weather related, there is not much difference... Click image to enlarge Roaming around 🇳🇴🇨🇭 |
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8th Feb 2022 9:05am |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5808  
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That looks a wonderfully presented bit of data. Apart from the arrows….disappointing DeeEss, disappointing
 Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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8th Feb 2022 9:15am |
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| Angus_Beef Member Since: 30 Apr 2015 Location: Oslo Posts: 434
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Sir, those arrows were drawn by me, personally, with my finger on my phone. Those are rare and special arrows!
 Roaming around 🇳🇴🇨🇭 |
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8th Feb 2022 9:19am |
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| NCTT Member Since: 07 Apr 2008 Location: ESSEX Posts: 229
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Thanks chaps
to be honest i was mildly curious , i dont do alot of miles but im due to change soon so thought id ask much appreciated to you all |
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8th Feb 2022 9:21am |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5808
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As mentioned above, there are so many other variables to consider, the first being surely no one who buys/drives a Defender has frugality at the top of their criteria.
Total Weight, usage, road surface, weather conditions, driving style, engine type, mapping, aerodynamics (roof racks and bolt on bits), AND tyres probably have a bigger influence on MPG that just the tyres themselves. At least more than might be lost just in buying a set of MTs over road tyres. I’d think the greater question about to MT or not to MT would be cost, handling, noise, looks, off-road y/n and MPG (not necessarily in that order as it is horses for courses). I still can’t make my mind up between (my current) KO2s and the Cooper STT Pro which I think look fab. Do I mind noise? Not really, I’ve always got music on or window open. Do I mind MPG? No, mainly local driving and all claimed through business. Do i mind purchase cost? Not too much given longevity and being put through the business. Do I mind handling? Yes, given I live up twisty mountain roads and do 95% of my driving on them. And especially in snow. That’s why I’m still leaning towards the KO2s as they handle (generally) better and are snow rated. But do I love the look/stance of the Coopers, damned right, and it’s a constant tousle. So if it’s something you’re think of doing, hence the OP, I’d suggest looking at the bigger picture… Monsieur Le Grenadier I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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8th Feb 2022 9:27am |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324
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A comment along these lines comes up pretty much any time somebody mentions MPG but I think it's a misplaced criticism. Firstly, everything is relative and a, say, 10% difference in MPG and hence fuel costs may be significant to some, even if it's just the principle of not spending more than is necessary. Secondly, monitoring MPG can be good indicator of something not working properly. Whilst a Defender may be a relatively inefficient vehicle, there's no reason why it should be more inefficient than necessary for it's chosen usage. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia Last edited by LandRoverAnorak on 8th Feb 2022 2:43pm. Edited 1 time in total |
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8th Feb 2022 9:53am |
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| camelman Member Since: 27 Feb 2013 Location: Peak District Posts: 3372
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Yep, thats about right. To be fair, I use the 130 as my daily drive now so the 110 doesn't do that many miles so not really a problem. |
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8th Feb 2022 1:13pm |
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| wyvern Member Since: 13 Dec 2009 Location: Cornwall Posts: 2108 
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I found that I got better consumption with the new BFG ATRs when fitted after my well used and older Wrangler MT tyres of the same size, but put that down to having new tyres and a larger circumference ...
Since I have had the remap I do find a better consumption on my regular monthly return drive from Cornwall to Scotland, sitting at a comfortable 60-65 all the way. I’m not an acceleration fan so never race the engine, but its nice to be able to cruse at a reasonable speed and get a good 400 miles out of a tank.  Poppy - TDCI (Puma) 110XS 2.2 - Camper conversion - see the build here - https://www.defender2.net/forum/topic56530.html
Elgar -TDCI(Puma) 110XS Dormobile - now sold Devon & Cornwall 4x4 Response - DC126 |
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8th Feb 2022 1:40pm |
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