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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re:t30 oversize tyres
What brand/type of tyre?
For anyone else that comes along, here's the rundown of tyre diameters;
T30 Ti - 215/65/16: 27.0in/686mm
T31 Tl - 225/55/18: 28.0in/704mm
225/70/16: 28.4in/721mm (fits on T30, some A/T in 'P' passenger contruction, no M/T, no LT)
215/75/16: 28.7in/729mm (fits on T30 but only H/T and LT van tyres in this size, no A/T or M/T)
235/70/16: 28.9in/735mm (just fits on a T31?)
225/75/16: 29.3in/744mm ('LT' versions rub on full lock - see images in following posts)
So what you can see from the above is that a 29in/@740mm tyre is the limit. Which is a bugger as I have a brand new set of 9.5x30x15's Hankook RT03 muddys I would of loved to have put on my newly acquired T30.
It's also a bugger as most 16in offroad tyres start at 225/75/16!
Oh, also, you need to factor in that a mud tyre will probably have a 18-22mm tread depth, whereas a highway tyre will prob have a 9-11mm tread depth, so the 'rolling diameter' could be greater than what the math calculator says. Always best to check the manufacturers specs.
Last edited by Wiz Au, 26/Jul/2017, 4:34 pm
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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18/Jul/2017, 10:26 pm
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Revhead Kev
Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6355
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Re: Oversized Tires on T30? Is it possible, anyone done it?
When you say they rub on full lock, is it just the plastic splashguard or do they also rub on the body or guard somewhere ?
--- Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
My Blog
My CarPC Worklog
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20/Jul/2017, 10:51 am
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: Oversized Tires on T30? Is it possible, anyone done it?
Just found some more info on why some people say a 225/75/16 fit, yet my experience is different. Those people who say they have, so far as I can see, did not fit LT style tyres.
'P' (passenger) tyres have 11-13mm of tread. Some 'A/T' tyres have 14-16mm of tread, the the ones I was trying, in 'LT' (Light Truck) constrction and patterns, have 18mm (some even 20mm!) of tread depth. Thats about 5mm which would make the difference in clearing the guards...it's that close.
LT tyres, especially in the 'mud' or aggressive AT I'm looking at, have very square shoulders, whereas the passenger construction have rounded shoulders and will clear the guards better at lock/turn.
Just look at the shoulders and the tread depth on the 'same' Yoko G015's above.
And then compare these [Hankook RT03 / Yoko G015'P' / BFG KO]. The shoulders are so different it's not funny!:
Last edited by Wiz Au, 26/Jul/2017, 4:46 pm
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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26/Jul/2017, 3:34 pm
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: Oversized Tires on T30? Is it possible, anyone done it?
So I ordered the 225/70/16 SL369 in the GoodRide Brand, and 'P'assenger construction for now, as I got a bargain deal of $478 for 4 tyres from Tyresales online. Even if I managed to get the 4 for 3 deal from Yoko on some older G012's the same size, it would have been over $700.
Now that I have them on, and there were some WestLake SL369 tyres in 225/75/16 LT 10Ply sitting there as well, I think I could have put the 225/75/16 in the SL369 'P'assenger on. On paper the SL369 were the same exact size as the Yoko G012, but as you can see above in the picture, I have at least 10mm clearance on the same contact points the Yoko's were fouling on the car.
But yes, these are 70 series, not 75 series, and if you compare the measurement data, the 225/70/16 is 721mm, and a 225/75/16 is 744mm. That's a difference of about 11.5mm radius, and I reckon that is dead set right now. The 225/75/16 hit the rear mudguard (but only just) and the 225/70/16 clears it by about 10mm.
I sat the WestLake SL369LT 225/75/16 next to the 225/70/16 'P' tyres and there was a significant difference in tread aggressive pattern and squaring on the shoulders comparing the LT version to the the 'P' version of the same tyre.
Overall the tyres were about @20mm different in vertical height (23mm by specifications). But I reckon the WestLake SL369 225/75/16 LT tyres would have 'just' fit, maybe touched just a fraction. But I was concerned about putting a 10ply tyre on a little exy! Might be VERY hard to ride in, they are not exactly 2tonne units like Prado's, Patrols and LandCruisers.
In the end I think these tyres will do for where I will be taking this car, but it would have been nice to be able to get some more aggressive tyres.
Last edited by Wiz Au, 26/Nov/2017, 8:48 pm
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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28/Aug/2017, 2:25 pm
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Wiz Au
X-TRAIL ENTHUSIAST
Date Registered: 06-2017
Location: Canberra, ACT
TOTAL POSTS: 185
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Re: Oversized Tires on T30? Is it possible, anyone done it?
The ones I had to settle for (225/70/16) are NOT "LT" construction. They are not very aggressive, but they were CHEAP! To me, having KM2's and Yoko G012's [LT version] on the Pathfinder, these are a "road" tyre, that are a 'bit' off-road. Very quiet on the tar, like a highway tyre really.
BFG KO2's would have been a better off-road choice, but they were just so expensive for that size ($1200, vs the $470 I paid for the GoodRides.)
It was really a choice of: "This will do for right now, and it won't cost a lot"
I have only taken them off-road on formed powder dust and rocky trails (Webbs Ridge in the Brindies), which they handled quite well, but I don't think they would handle 'slop' very well. I ended up airing down to 17psi on the trails to get a good "feel" out of them. 18psi was still like having road pressures on them and 16psi made me a bit nervous I could peel a tyre off a rim and they were 'bagged out' a bit too much. (I've settled on 27-28PSI on the tar.)
Sorry, I'll see what hapenned to the pics I took when I got them fitted.
As an Ex-Subaru dealer workshop manager, and having worked in mechanical workshops a large part of my life, I would not be concerned about going up a few sizes in tyres on wheel bearings, CVs, and steering components. Those components are well over-rated to handle this small change. Now, lifting 5 inches and putting 36in tyres on, yes, that can load things up a bit too much and would probably require a change of parts.
Last edited by Wiz Au, 18/Oct/2017, 9:09 am
--- 2004 T30 series II, Ti (now sold)
JRR50 Pathfinder, QD32ETi Turbo Diesel, with 'lots o fruit'.
2012 Jeep Cherokee KK CRD Limited is current ride.
Will be looking for a white or silver 2011-2013 T31 TL (Diesel) to "pimp out".
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18/Oct/2017, 8:53 am
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