100 series v8 IFS

Submitted: Saturday, Feb 11, 2012 at 20:33
ThreadID: 91804 Views:1610 Replies:3 FollowUps:7
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Hi all,
I am putting new tyres on my 100 series v8 IFS cruiser, can any on give any feedback on the advantages or disadvantages with upsizing to 285/75s.... Will they fit with a 25mm lift?
I am looking at going to the new cooper st maxx.

Any feedback would be great
Thanks
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Reply By: Member - nick b - Saturday, Feb 11, 2012 at 23:02

Saturday, Feb 11, 2012 at 23:02
hi expanded :285 x 75 x16 will fit std suspension with good clearance .
speedo will read 105 to 107 at kph at 100ks , we have micky's tyres
cheers nick
Cheers Nick b
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Follow Up By: Member - Expanda- Sunday, Feb 12, 2012 at 07:18

Sunday, Feb 12, 2012 at 07:18
Thanks nick,
Did you loose much performance or economy from the std size?


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Follow Up By: Member - nick b - Sunday, Feb 12, 2012 at 21:46

Sunday, Feb 12, 2012 at 21:46
didn't notice any performance as you properly plenty of power with these vehicles , economy what economy !!!!! LOL :-)

I would never go back to the olds , just the speedo is a problem , but you can have that changed .

regards to the springs I'v got a set of + 50 / < 300 kg to go on for a trip this year towing camper with heavy load , std can get a saggy with a load.

cheers nick
Cheers Nick b
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Reply By: Member - Peter S (NSW) - Sunday, Feb 12, 2012 at 06:52

Sunday, Feb 12, 2012 at 06:52
H, I have had the 285/75 BFG AT tyres on my 2003 V8 for about 5 years, standard height, no probs at all, have just had new shocks (Lovells) and polyair bags fitted, improved the ride. hope this helps. Pete
AnswerID: 477522

Follow Up By: Member - Expanda- Sunday, Feb 12, 2012 at 07:26

Sunday, Feb 12, 2012 at 07:26
Pete,
Much appreciated, I am just about to give the suspension an up grade.
My van weighs 2.6t, I am tossing up wheather to go std coils with 25mm lift and add air bags or go 300kg over std gvm / med coil to cope with the extra ball and gear weight.
How do you find the air bags so far?

Cheers
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Follow Up By: Member - Peter S (NSW) - Sunday, Feb 12, 2012 at 10:08

Sunday, Feb 12, 2012 at 10:08
Sorry I cant give you info how the vehicle is with the van attached as I have not as yet towed the van with the new shocks and polyair bags, my van weight is 2000kg atm and with the old standard shocks the rear of my car dropped about 30mm, after fitting the new ones and without the van attached the car is now 25mm higher at the back than before, measurement from centre of wheel to underside of wheel arch is 21 inches or 535 mm, not sure what that measurement would be standard but would like to know.
I have 8psi in the airbags and will up that when van attached, I did not expect to get a 1 inch lift at the back but that does help and the suspension is still standard height, eg I have not added any lift apart from standard height Lovells shocks and the polyair bags.

Hope this helps, Pete.

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Reply By: Member - Rob D (NSW) - Sunday, Feb 12, 2012 at 09:01

Sunday, Feb 12, 2012 at 09:01
See Blog 2723 Are You Operating Your Tyres Beyond their Design Limits and follow the links.

This answers many of your questions with hard to find data from tyre manufacturers and tyre standards organisations.

I upgraded my tyres from 265s to 285s mainly because of the increased load ratings at low inflation pressures as needed in extended sand driving.

If you relax at a faster pace you can get more relaxation in for a given time.
Regards Rob

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Follow Up By: Member - Expanda- Sunday, Feb 12, 2012 at 09:36

Sunday, Feb 12, 2012 at 09:36
Rob,
This is why I am a member of Explore Oz, as you have experienced first hand trying to wade through the advice given by suppliers is at best foggy on most occasions.
I to like yourself will be doing extended low pressure driving with a very heavily ladden veichle and this was one of my reasons behind going to a higher rated tyre.
I want to thank you greatly for your response.
This has confirmed my decision.

Cheers
Shaune.
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Follow Up By: Member - Rob D (NSW) - Sunday, Feb 12, 2012 at 10:40

Sunday, Feb 12, 2012 at 10:40
Shaun,
You are very welcome. I hope you took the time to read all of the tyre information on my website. I find the charts for the Load vs Speed vs Pressure very helpful and carry them with me at all times.

It is important to weigh your loaded vehicle front and rear, you will probably get a big surprise. Packing enough food, fuel and recovery gear for a safe Canning Stock Route trip makes it pretty much impossible to stay within your legal GVM.

If you relax at a faster pace you can get more relaxation in for a given time.
Regards Rob

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Follow Up By: Member - Expanda- Sunday, Feb 12, 2012 at 12:58

Sunday, Feb 12, 2012 at 12:58
Rob,
I have printed and will read in depth.

Thanks to all for your feedback very much appreciated.

Cheers.
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