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cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
Reply | QUOTE
Re: Re:


quote:

Ian Ewin wrote:
Tony,
I agree in this instance, as bigwillie's tyres will be a notable increase in size from standard. Although the "Any type of oversized tyre" comment may have been a little too broad to warrant the cv/driveline/steering,etc warning. Oversized wheels/tyres are an incredibly common occurence, in particular with the younger crowd ie. 20inch rims on all manner of light/heavy vehicles, and it's fairly rare that you'll hear about cv's and the like breaking/failing earlier than they usually would on those particular cars. Keeping in mind too, that younger folk are also significantly more likely to push/punish those driveline/steering components more than anyone on the road, haha.



Oversized tyre, I am referring to any size over standard, and yes just going one size bigger in tyre height comes into play even though very minor.
20 inch rims are not what I call over sized as the tyres are still thin to keep within the rolling diameter of standard.
Start playing with the offsets and that's a different ball game.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

31/Mar/2013, 6:32 am Link to this post Send Private Message
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re: Thinking about oversized tyres on T31


quote:

Johngqld wrote:

Hi to All,
           I have been running the Yokohama Geolanders in 225 / 65 /17 for nearly 12,000 klm since November last year. Fuel usage is up by about half a litre per 100 klm from my original factory Bridgestones which were the 215 / 16. With a rolling diameter of some 46mm more, I got a lift of 23 mm and at no point have they scrubbed, scraped on the body work. Bonus is the van is now level behind it. They are also a great tyre in both wet and dry and gravel, with road noise minimal. I'm actually going to get a 225 /70/16 and fit this to it's existing steel rim as the spare as there is only 4mm difference in diameter.

John



John, your fuel usage isn't up at all.

By making the profile change that you have, you have decreased the amount your speedo over reads.

With the standard tyre size, your speedo over reads by about 9km/h at an indicated 110km/h. This means that are actually doing 101 km/h. Therfore when you calculate fuel figures, your economy appears to be approx 9% better than it really is.

When you increase tyre rolling diameter to reduce speedo error, your fuel economy figures are in fact more accurate.

Your economy hasn't gotten worse. Dependant on the vehicle, it most likely slightly improved due to the reduction in rpm.

 



---
X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
9/Jun/2013, 11:31 pm Link to this post Send Email PM   Send Private Message Blog
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
Reply | QUOTE
Re: Thinking about oversized tyres on T31


quote:

Johngqld wrote:

Hi to All,
           I have been running the Yokohama Geolanders in 225 / 65 /17 for nearly 12,000 klm since November last year. Fuel usage is up by about half a litre per 100 klm from my original factory Bridgestones which were the 215 / 16. With a rolling diameter of some 46mm more, I got a lift of 23 mm and at no point have they scrubbed, scraped on the body work. Bonus is the van is now level behind it. They are also a great tyre in both wet and dry and gravel, with road noise minimal. I'm actually going to get a 225 /70/16 and fit this to it's existing steel rim as the spare as there is only 4mm difference in diameter.

John



John, your fuel usage isn't up at all.

By making the profile change that you have, you have decreased the amount your speedo over reads.

With the standard tyre size, your speedo over reads by about 9km/h at an indicated 110km/h. This means that are actually doing 101 km/h. When you calculate fuel figures with standard tyres, your economy appears to be approx 9% better than it really is.

When you increase tyre rolling diameter to reduce speedo error, your fuel economy figures are in fact more accurate.

Your economy hasn't gotten worse. Dependant on the vehicle, it most likely slightly improved due to the slight reduction in rpm.

 



Last edited by Charlie250, 8/Sep/2013, 2:17 pm


---
X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
9/Jun/2013, 11:31 pm Link to this post Send Email PM   Send Private Message Blog
 
dmakcorp Profile
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Date Registered: 08-2013
TOTAL POSTS: 2
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Tyre upgrade


Howdy I have the bridgestone dueler 697 in 225/65/R17 and they have been great, but I would like something a bit more aggressive, without having to replace the rims. This size has never scraped for me (I do have the Pedders lift, but it did not even before i put the lift on). There seems to be conflicting stories about going any bigger than this on the 17'? Any help appreciated.
6/Aug/2013, 8:01 pm Link to this post Send Email PM   Send Private Message Blog
 
Xtraildude Profile
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Date Registered: 09-2012
TOTAL POSTS: 32
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Re:


I went up to the same, 225/65-17 from the stock tires. My speedo is now spot on and economy perception a little worse but as Charlie pointed out it is now genuine. Still get at least 700k on a tank so happy with Exy mileage.

The tires are those budget Rapid ones. Was sus but they seem fine. No road noise and grip ok in the wet. I haven't found their limit yet. For $130 fitted I am impressed. Even if they don't last as long as the Geolanders did I can fit another set and still have change.

---
Stock 08 6spd Xtrail
X-2669 (c)
24/Nov/2013, 9:08 pm Link to this post Send Email PM   Send Private Message Blog
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re: Tyres


According to my GPS, the Dueller 697's fitted to my ride, (225 65 17) have my speedo indicating 110km/h when in fact it is only doing 105 km/h.

If I can get Dueller 697's in a 235 65 17 at a decent price when the time comes, I'll go for them. (Currently the 235 is about $80 a tyre dearer than the 225!)

Otherwise I'll stick with the 225 65 17

---
X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
25/Nov/2013, 1:16 pm Link to this post Send Email PM   Send Private Message Blog
 
Toddyh03 Profile
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Date Registered: 08-2011
Location: Lalor Park, NSW
TOTAL POSTS: 1663
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Re: Thinking about oversized tyres on T31


Great news everyone in NSW. They have finally released VSI 6. You can now run tyres that are up to 7% larger than stock. So if stock is 215/60/r17 you can run 225/65/r17 legally. Could even go up to 235/65/r17 (only just as it's bang on 7%). See the document here. Page 7 has the tyre details.

This means even Ian's 29" muddies are completely legal now without any certification required.

---
Toddyh X-2048 (c)
New: Challenger
Old: 2010 T31 Diesel modified
My XTrail
10/Dec/2013, 10:03 am Link to this post Send Email PM   Send Private Message Blog
 
deepcangler Profile
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Date Registered: 06-2013
Location: Tathra NSW
TOTAL POSTS: 7
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Re:


Mmmm.... 7%

Time to see if 245/70/r17 tyres will fit on the X-Trail.

Legal by 0.2mm

---
Paul (X-3142)
2009 X-Trail T31 TS Series II Turbo Diesel Manual.
17/Dec/2013, 8:27 pm Link to this post Send Email PM   Send Private Message Blog
 
MrMez Profile
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Date Registered: 03-2011
TOTAL POSTS: 124
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Re:


If you are going oversized for off road, especially the benefits of running lower pressures on sand, a taller tire works better than a wide tire.

I got a free set of used 225x75x16s, which new would be 6% over. Given that I only change over once or twice a year when I get time to go off road, I'm not fused that they could be a little over.
18/Dec/2013, 11:01 am Link to this post Send Email PM   Send Private Message Blog
 
craig90 Profile
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Date Registered: 12-2009
Location: Brisbane
TOTAL POSTS: 90
Reply | QUOTE
Re: Thinking about oversized tyres on T31


Good to see they have changed the rules in QLD for tyre sizes (Wasn't like this when i bought my last set of tyres)

Any tyre fitted to a passenger car or passenger car derivative must not
be more than 15mm larger or 26mm smaller than that of any tyre designated by the vehicle
manufacturer for that model.

The overall diameter of any tyre fitted to:
 4WD passenger vehicles specifically designed for off-road use (typically MC ADR
category). All wheel drive (AWD) vehicles including those AWD vehicles that may be
certified as MC ADR category, (also commonly known as soft roaders) are not
included in this category;
 4WD goods vehicles and their 2WD equivalents if the chassis and running gear are
essentially the same as the 4WD version (N ADR category); or
 any medium weight goods vehicle (NA2, NB ADR category).
Must not be more than 50mm larger or 26mm smaller than that of any tyre designated by the
vehicle manufacturer for that vehicle.
Note: Increases in tyre diameter are subject to compliance with all other requirements
specified under this clause (Clause 4.2 Non-Standard Tyres and Rims) and may
therefore be limited by other factors such as insufficient clearance.


---
X-1467 08 T31 TL Auto Platinum: Tinted Bonnet Protector, Tinted Windows, Fitted Seat Covers F&R, Rubber mats, Phone kit, Luggage Carpet, Weather Shields, Dash Mat, Tow bar, K&N filter, Twin screen DVD Player (the new Kingswood)
21/Dec/2013, 3:03 pm Link to this post Send Email PM   Send Private Message
 


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