VCO Posted October 26, 2011 Report Share Posted October 26, 2011 good morning I just realized that my spare is totally different then my tires. I have Hankook dynapro 245/70 R16 on wheels and my spare is Dunlop 265/75 R16 so my spare is ~ 5 Cm bigger than my tires I was already thinking about getting big tyres so I guess this is a good time Last sunday I spend 5 hours cruising in desert around Madam road to Hatta and in copule of occasions I could not get to the hills which my friend easly gets with his Fortuner 265 wide Geolander I had the momentum and did not feel any lack of power but my tires keep turning and not getting me anywhere ( they we all 15 psi) so this is the question What is the biggest size I can fit ? Can I go 275-285 range with my currents rims , they are 7" I guess Are Cooper ATRs any good in sand? Last time I spend some time in climbing some rocks and it was fun as well so I need a tyre which can also handle such situations thanks Link to comment Share on other sites More sharing options...
victor21 Posted October 27, 2011 Report Share Posted October 27, 2011 Get 265 BFG or ATR, both are equally good for sand and rock climbing. Slight different in spare tire wont make any difference if ever you use spare for few days, so i hope you are not only changing to get perfect size but actually you have a need for offroad usage. To be honest tire difference contribute 5% on performance and that climb issue what you are referring having another hidden issue known as real output difference. Check HP and torque for fortuner against its weight and do same for disco. The Fortuner is available with two engines, the 118 kW (160 PS; 158 hp) rated 2.7 L or the 175 kW (238 PS; 235 hp) rated 4.0 L. 1999 - 2003 LR Disco: Produced 188 hp (140 kW) at 4,750 rpm and 250 lb·ft (340 N·m) at 2,600 rpm. Fortuner: 235 hp / 1800kg = 130 hp/ton Disco: 188 hp / 2000 kg = 94hp/ton Double check the figures, as i have done this very quickly to give you an idea. You can do same for torque figures. Link to comment Share on other sites More sharing options...
VCO Posted October 27, 2011 Author Report Share Posted October 27, 2011 I need the offroad tires. one of the current ones already damaged so I do not know how much it will hold I'll probaby go for Cooper ATR . you are offcourse right about power ratios between fortuner and my disco but I still think more suitable & wider tires will make difference Link to comment Share on other sites More sharing options...
pushkar Posted October 28, 2011 Report Share Posted October 28, 2011 Just fYI, cooper and BFG are slightly noisey on road. Cooper STT is too much noise, then comes BFG and then cooper ATR (least amount of noise). But still more than normal on road tires, due to aggressive tread design. So you should have a mind set before shopping. Link to comment Share on other sites More sharing options...
VCO Posted October 28, 2011 Author Report Share Posted October 28, 2011 I do not have any prob with noise I already have enough( thanks to the almost non existant door seals ) After eid tires will be the first thing Link to comment Share on other sites More sharing options...
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