changing wheels!!!!!!!

davesopener · Postby **davesopener** » 14 Apr 2008 11:13

hi,
my car currently has the standard alloys which i really like
however feel car would benefit from slightly bigger alloys say 15"
is this wise?
would mgf wheels work well
just wondered anyone had any advice
ty[;)]

trphil · Postby **trphil** » 14 Apr 2008 11:50

MGF wheels work fine, they're certainly the easiest way to go.

Beans · Postby **Beans** » 14 Apr 2008 17:12

Just make sure the offset (ET) of the front wheels remains the same as the original wheels.

<center>

1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
http://tr7beans.blogspot.com/</center>

samco · Postby **samco** » 15 Apr 2008 07:19

I've got 15 inch MGF square peg alloys on mine and I am really pleased with them. Take a look at my photobucket link.

If it doesn't fit you obviously need a bigger hammer.

www.metronewquay.co.uk www.wheelintheheel.co.uk

Check out my album

http://s163.photobucket.com/albums/t299/samco_bucket/

My youtube progress http://www.youtube.com/watch?v=4kMDqLU1N7Y

1980 Californian import converted to right hand drive V8. Under construction.

TR Tony · Postby **TR Tony** » 15 Apr 2008 07:49

The MGF alloys are a popular choice & relatively easy to find second hand. There is not a lot of choice out there due to the rather unique Rover/Triumph PCD of 95.25mm.

There are several different types of MGF alloy, in 15" 6J & 16" 7J sizes. All have the correct PCD at 95.25mm. As far as I know they will all fit the TR7.

The offset varies from 30 to 35mm depoending on the style. The standard TR7 offset is 25mm. Beans is right to mention this as changing the offset can alter the steering characteristics but in practice this difference does not seem to be a problem.

The centre bore hole on the TR7 wheel is 57.1 mm, On the MGF wheel it is 56.6mm. Given that the TR7 wheel is hubcentric (i.e. the centre hole is part of the mount for the wheel onto the hub, this 0.5mm difference in diameter might be a concern, but again in practice it does not seem to cause a problem. I don't think anyone has gone to the trouble of enlarging the MGF centre bore to match the original TR7 wheel.

I've got the 15" MGF wheels on my TR7V8, they look good & have given me no problems.

Tony

1981 2L FHC Cavalry Blue - very original & not rusty!
1980 3.5L V8 DHC Regency Red - on the road again.

trphil · Postby **trphil** » 15 Apr 2008 09:24

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by TR Tony

I don't think anyone has gone to the trouble of enlarging the MGF centre bore to match the original TR7 wheel.<hr height="1" noshade id="quote"></blockquote id="quote">

I did, but mine are powder coated and without enlarging the holes they wouldn't fit on the back wheels (strangely that fitted fine on the front). When I got my spare wheel recently I just "turned" it with a Stanley knife, rather than take it to a machiners.

davesopener · Postby **davesopener** » 15 Apr 2008 16:37

oh right so there no issue re wheel clearance with the 16" or larger wheels?
ty
[;)]

Beans · Postby **Beans** » 15 Apr 2008 17:24

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by TR Tony

... Beans is right to mention this as changing the offset can alter the steering characteristics but in practice this difference does not seem to be a problem ... <hr height="1" noshade id="quote"></blockquote id="quote">
You should trash it a bit harder [}:)]

With the TR7 (McPherson strut) front suspension, the centre line of the strut and the centreline of the wheel should intersect at the tyres contact patch with the road surface.
Changing this by putting wheels with a different ET on the front will alter your steering chararcteristics. How much and how it changes all depends on the place where the lines intersect. And your driving style of course ...

<center>

1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
http://tr7beans.blogspot.com/</center>

ngtf · Postby **ngtf** » 15 Apr 2008 18:09

I have MGF wheels on mine, I personally like the look.

Gary

Eeyore rides again !!

EOR14W - Persian Aqua 2L Dhc, Now rebuilt and looking lovely - Sprint engine being prepared!

trphil · Postby **trphil** » 16 Apr 2008 08:07

When I fitted MGF wheels on mine it improved the handling no end and made the steering slightly lighter. I put this down to there being less tyre wall flex with 15 inch wheels.

signman · Postby **signman** » 16 Apr 2008 08:22

they fit fine no problems see tr8 for sale for pics

davesopener · Postby **davesopener** » 16 Apr 2008 08:33

ok sounds like mgf wheels are a good option
i quite like some of the zr and zs wheels
might look at them as well
ty
love the idea of thrashing it a little beans!![8D]

HowardB · Postby **HowardB** » 16 Apr 2008 12:21

I have just fitted MGF wheels and like trphil was pleasantly surprised to find that the handling improved and the steering was lighter.

One thing that no-one else has mentioned when discussing the low profile tyres on the mgf wheels is that the original sketches that are in the Rimmer's catalogue showed the car with low profile tyres - so what we are doing is more true to the original design than the TR7's that came out of the factory!

Beans · Postby **Beans** » 16 Apr 2008 17:57

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by davesopener

...i quite like some of the zr and zs wheels
might look at them as well... <hr height="1" noshade id="quote"></blockquote id="quote">
If I remember correctly the Rover 200/25 and 400/45 based ZR and ZS models have a 4x100mm PCD. So they won't fit.

<center>

1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
http://tr7beans.blogspot.com/</center>

stevie_a · Postby **stevie_a** » 16 Apr 2008 19:19

davesopener the MGF wheels i have are from the very last MGTF

and are called V spokes

They are quite hard to find but I was lucky

and found them new in box on e-bay for Â£137

If it's not broke don't fix it.

Anonymous

changing wheels!!!!!!!

changing wheels!!!!!!!

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