I have got a good pair of Greenway Atacama 750s on the front of my 2A RTV
trialer and i was thinking of getting a pair of Insa Turbos (Simex copies)
for the rear, But i think they only do them in 235-85s.
I know they are a similar-ish size, Any Thoughts ?
Cheers
Lee_D - 31 Jan 2008 15:52 GMT
>I have got a good pair of Greenway Atacama 750s on the front of my 2A RTV
>trialer and i was thinking of getting a pair of Insa Turbos (Simex copies)
>for the rear, But i think they only do them in 235-85s.
> I know they are a similar-ish size, Any Thoughts ?
>
> Cheers
The difference in rolling radius is going to be down to mm's. I recently
checked this when changing the tyres on the 110. I did alot of research and
they are as close as can be diameter wise. You would probably have more
difference between a new tyre with good tread and a tyre the same with
minimal tread.
The only other thing is to make sure they are all radials and never to mix
radials and cross ply on the same axle.
Lee D
Stuart Gray - 31 Jan 2008 17:03 GMT
>> I have got a good pair of Greenway Atacama 750s on the front of my 2A
>> RTV trialer and i was thinking of getting a pair of Insa Turbos (Simex
[quoted text clipped - 13 lines]
>
> Lee D
Ah, how well I remember the old public information film, featuring a
voice over saying just that over a film of an Austin 1300 (?) going out
of control.
Stuart
Splitpin - 01 Feb 2008 07:14 GMT
>>> I have got a good pair of Greenway Atacama 750s on the front of my 2A
>>> RTV trialer and i was thinking of getting a pair of Insa Turbos (Simex
[quoted text clipped - 18 lines]
>
> Stuart
Thanks for the info.
I remember that film and here it is
http://www.youtube.com/watch?v=c23MFIKiVdE
Steve - 31 Jan 2008 17:37 GMT
>>I have got a good pair of Greenway Atacama 750s on the front of my 2A RTV
>>trialer and i was thinking of getting a pair of Insa Turbos (Simex copies)
[quoted text clipped - 13 lines]
>
> Lee D
Isn't there a right way and a wrong way to have them back and front aswell?
Perhaps I'm thinking of summat else, dunno.
Steve
Lee_D - 31 Jan 2008 22:14 GMT
>>>I have got a good pair of Greenway Atacama 750s on the front of my 2A RTV
>>>trialer and i was thinking of getting a pair of Insa Turbos (Simex
[quoted text clipped - 18 lines]
>
> Steve
Yes but to keep things really really simple.... don't fit cross ply
tyres.... problem solved :-)
Lee D
Austin Shackles - 01 Feb 2008 09:45 GMT
>Yes but to keep things really really simple.... don't fit cross ply
>tyres.... problem solved :-)
many 7.50s are now radials.

Signature
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------\
>> http://www.schlockmercenary.com/ << \ ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!
Alex - 01 Feb 2008 18:05 GMT
>>> Cheers
>>
[quoted text clipped - 11 lines]
>Isn't there a right way and a wrong way to have them back and front aswell?
>Perhaps I'm thinking of summat else, dunno.
If you mix x-ply and radial tyres, then the radials must be fitted to
the back axle and the x-plys to the front. Mixing across axles is not
permitted. And mixing a 7.50 Radial with a 235/85 on one axle probably
wouldn't pass either, as the tester would be unable to assertain
wether the two tyres were of the same aspect ratio.
Alex
gordon - 01 Feb 2008 09:01 GMT
Thoughts, yes. Try and measure them first, I did much the same thing
as you a while back on my S1 trialer but mixing 7.50 SATs and 235-85
Colway something or others. Compared to the SATs the Colways were huge
and overfilled my poor little wheel arches. They were just too big for
the S1 so got sold on and I reverted to all 7.50s.
Gordon
Austin Shackles - 01 Feb 2008 09:44 GMT
>I have got a good pair of Greenway Atacama 750s on the front of my 2A RTV
>trialer and i was thinking of getting a pair of Insa Turbos (Simex copies)
>for the rear, But i think they only do them in 235-85s.
> I know they are a similar-ish size, Any Thoughts ?
I think it'd cause slight wind-up in 4WD. The nominal circumference is
about 40mm more, or about 2.5%
But it'd be worth comparing the actual tyres, some nominal 7.50s are bigger
than 7.50, and some 235/85s are smaller than 199.summat mm high.

Signature
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------\
>> http://www.schlockmercenary.com/ << \ ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!