Sorry, Tyres again!!

[Lazy-Ferret]

Sorry to have to ask this again, I tried to do a search, but the stupid limit of not less than 4 letters stops you searching for so many automotive things...

I want to know what the largest size tyres I can fit to my 16" standard T2 alloy rims, when I have both a 2" body and a 2" suspension lift, with out having to loose the mud flaps or beat the body work up.

Currently I have 235/70/16's

 

[Lazy-Ferret]

What about these?

The 235/85R16 BFGoodrich All-Terrain T/A KO2

My current tyres are 235/70R16 BFGoodrich All-Terrain T/A KO Tires with the following Specs:=
..................................Mine............ Proposed
Diameter.....................29.1"......... 31.7"
Width .........................9.5"........... 9.3"
Rim Range ..................6-7.5"....... 6-7.5"
Measured Rim..............7".............. 6.5"
Tread Depth................16/32"........15/32"
Load Range Max..........C............... E
Load Max....................1985 lbs..... 3042/2778 lbs
psi...............................50 psi........ 80 psi
Weight.........................38 lbs........ 49.1 lbs
Revs/Mile.................... 715........... 656

 

[Fez_uk]

I would air on the side of caution if you want to be sure. Would think 31" is the max i'd go.

Same size used to rub on the front when the suspension cycled and turning on bumps etc. I only had a 2" body lift though but no mud flaps with -20 offset.

 

[solarman216]

That load range at 80 psi looks rather excessive Clive, would think that would produce a very harsh ride, Rick

 

[makeitfit]

With a 2 + 2 lift you can go to 33s without body bashing but you may need to adjust your flaps

 

[Lazy-Ferret]

Thanks for the info guys...

Rick, I don't know a whole lot about tyres, other than the obvious stuff, so this may be a silly question/statement. Surely, even though they are higher load rating, I would still only pump them up to the standard 32-35psi, I would normally use, so it would not be a lot different?

 

[solarman216]

That may work if it is in their statement of running rates, but a high ply rating tyre will not normally run at very low pressures without wear problems, Rick

 

[Lazy-Ferret]

That may work if it is in their statement of running rates, but a high ply rating tyre will not normally run at very low pressures without wear problems, Rick

Hmmm.. not so handy... all the larger diameter tyres seem to shoot up in their load rating. I think more research is called for...

 

[Thomas-the-Terrano2]

before reading 235/85s was going to suggest as tall yet no wider so can keep existing rims.

standard fit on defenders I believe, a modern version of the old 7.50x16s.

sure some have said would use them with only a 2" body lift.

 

[Lazy-Ferret]

Cheers...

Had a bit of a look around, and it seems that once you go up in size, the load rating jumps by nearly 50% on most tyres. Trouble is, it's a lot of money to commit, if they are going to ruin the ride.

 

[Wheelie]

I was also looking at changing wheels and tyres for larger ones, but I have a couple of questions,
A, do you guys change the speedo drive when you fit the bigger tyres
B, with the bigger tyres you have a bigger circumference, how does that affect the drivability, ie do you notice a difference when pulling away
Cheers

 

[don simon]

I was also looking at changing wheels and tyres for larger ones, but I have a couple of questions,
A, do you guys change the speedo drive when you fit the bigger tyres
B, with the bigger tyres you have a bigger circumference, how does that affect the drivability, ie do you notice a difference when pulling away
Cheers

I would have thought that something like a 31" would make the speedo more accurate.
Secondly, I'm not sure that there'd be a noticable difference between the 0-60 time of 12 minutes on the standard 29"ers and the added 10 seconds by going up an inch...

 

[Lazy-Ferret]

I would have thought that something like a 31" would make the speedo more accurate.
Secondly, I'm not sure that there'd be a noticable difference between the 0-60 time of 12 minutes on the standard 29"ers and the added 10 seconds by going up an inch...

:lol:lol

I was going through one of the tyre websites and it tells you what difference the tyre size will make to the speedo. On my car, when the GPS says I am doing 70, the Speedo says I am doing nearly 80, but the difference in the tyre size will only change it by 6mph at 70, so I will still be reading that I am doing more than I am.

 

[Fez_uk]

doing 70, the Speedo says I am doing nearly 80,

Just think all those people thinking they are getting high twenties mpg or even low thirties. :augie :lol

 

[Lazy-Ferret]

Just think all those people thinking they are getting high twenties mpg or even low thirties. :augie :lol

:lol

Saying that though, strange thing there is, I don't think the odometer is as far out as the speedo. many times I have plotted routes, and compared the car's mileage to the one given by the Mapping software, and they have lined up, even over long distances, like the 273 miles to our favourite camping site.

I did post once before how I could not work out how the speedo could be so far out, but not the mileage. Now you have mentioned it, the tyres will have a bit of an effect on the mileage I travel though, bigger wheels should mean the car does less miles each year.. :augie I will have to compare it the next time we go away, and see how much the distance changes to known places.