Dave,
A couple of years ago I made a number of calculations about tire sizes,
rear axle ratios, rpms/mile, rpms/mph, etc. I found that the tire size
makes a large difference. If you could tell me what tire size you now
have, I could look up on the chart and see if a different tire might help
with your question. Or, if you send me a fax number, I could fax over the
table for you.
I ended up with a 4.1 rear, and 5.60x15 Firestone bias ply tires. Yes,
it's sometimes sluggish in 4th, especially on long hills on secondary
roads, but 3rd is so much more useful that I wish I had made the change
years ago. My car is a MkII, which had the 4.875 gears. One thing I
found is that my tach was reading high, so when I thought the engine was
flogging in 3rd at 4500, it was really running only 3950, per my electric
tune-up tach.
Bob
On Sun, 06 Jul 1997 21:09:28 +0000 Dave Houser <mgs4dave@warwick.net>
writes:
>Question:
>Anyone know if there is a 14" 5-hole wheel that will fit the MG-TD?
>As you know I've got that 4.3 rear end in my car and I'm still a
>little
>unhappy with the hill climbing abilities. Love the lower RPMs at
>cruising speed and the usable third gear around town, though.
>I have been thinking of two things: smaller diameter wheels for better
>acceleration( so I believe) or pop in a 4.55 rear from my spare ZB
>magnette. Can anyone offer any sound opinion?
>
>Thanks as usual in advance,
>Dave Houser
>
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