bigger tyres on landcruisers

Submitted: Friday, Feb 28, 2014 at 18:13
ThreadID: 106472 Views:1876 Replies:7 FollowUps:4
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Has anyone replaced the standard tyres with "legal" bigger diam tyres on 70 series Toyota wagon or dual cab and what did you do about speedo recalibration.
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Reply By: Ozrover - Friday, Feb 28, 2014 at 18:54

Friday, Feb 28, 2014 at 18:54
I'm running 285/75R16s on my Dual Cab & it is about 2% out on the speedo, as long as you know It's not a problem, my issue is that the Odometer is out by about 9%?

Confirmed with the GPS.

AnswerID: 527416

Follow Up By: AlbyNSW - Friday, Feb 28, 2014 at 20:17

Friday, Feb 28, 2014 at 20:17
I am running the same as Geoff but mine is abit more out than his
I use my GPS to confirm speed
You can buy a speedo adapter to recalibrate if you wanted to
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Reply By: Member - Rosco from way back - Friday, Feb 28, 2014 at 18:57

Friday, Feb 28, 2014 at 18:57
I went with 265-75 inlieu of the original 265-70. The extra 15mm lift helps and now the speedo is spot on at 100 by the GPS, so no need to re-calibrate.
AnswerID: 527417

Follow Up By: Member - VickiW - Friday, Feb 28, 2014 at 20:10

Friday, Feb 28, 2014 at 20:10
I've done the same as Rosco and have the GPS on some trips verify the speedo is now spot on.

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FollowupID: 809816

Reply By: Member - Craig F (WA) - Friday, Feb 28, 2014 at 22:22

Friday, Feb 28, 2014 at 22:22
Marks Adaptors do some speed correction devices. I know on the Patrols you can change out the speedo gear in the transfer case to correct. Don't know if this is the same for Toyota..

Craig
AnswerID: 527434

Reply By: craigandej - Friday, Feb 28, 2014 at 22:25

Friday, Feb 28, 2014 at 22:25
Am running 285/75/16 BFG Muddies on the troopy, speedo almost spot on. Had 265/75/16 Mickey T A/T's previously with speedo out 10%.

Regards,
Craig
AnswerID: 527435

Follow Up By: exmouth1 - Friday, Feb 28, 2014 at 23:08

Friday, Feb 28, 2014 at 23:08
I also run 285, s on my troopy, Speedo is now spot on as it was 4_5 ks out before. Confirmed by my GPS
Cheers
John
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Reply By: Member - Mark A5 - Saturday, Mar 01, 2014 at 12:16

Saturday, Mar 01, 2014 at 12:16
I run the 285/75R16s on my cruiser the speedo is spot on with the GPS. I had to cut about 100mm out of the bull bar to stop the tyres rubbing.

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AnswerID: 527467

Reply By: Mick O - Saturday, Mar 01, 2014 at 13:03

Saturday, Mar 01, 2014 at 13:03
After running the 285/75-16 Toyos from new (4% discrepancy) I've now moved up to 315/75-16 which is providing for a 9% discrepancy in speed and odometer.

Haven't done a thing about it other than to remember it's there and 100kph on the speedo is actually 110 kph.

The other alternative is to use the GPS or Nav system for accurate speed and distances.

Cheers Mick
''We knew from the experience of well-known travelers that the
trip would doubtless be attended with much hardship.''
Richard Maurice - 1903

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Reply By: Rod W - Saturday, Mar 01, 2014 at 21:46

Saturday, Mar 01, 2014 at 21:46
Like a few of you I experimented with tyres to discover 285/75x16's gave a near enough accurate speed reading (GPS and odometer). One would think that is us mob of no-hopers can get it right then why can't the vehicle manufactures get it right.
AnswerID: 527501

Follow Up By: Rod W - Saturday, Mar 01, 2014 at 21:48

Saturday, Mar 01, 2014 at 21:48
Also meant to say this has been with/on two Troopies.
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