185/70-15 is very close to the same diameter as 165-15, so there should
be little difference in your speedo reading if that was what you ran
previously. Your biggest problem will be finding that size without
spending a lot of money for them. It has gotten to be a rare size.
Some of the companies that sell lots of different brands and sizes of
tires will have information on their website about the specifications of
each tire which would include the outside diameter or a conversion chart..
Tire Rack may be one of those sites.
http://www.tirerack.com/tires/tiretech/45_conversionchart.html
Other sizes to try would be 195/65-15 or 205/60-15.
On 3/8/2011 3:56 PM, Jack Feldman wrote:
> Much thanks to those who answered my question about mounting tube tires.
> Looks like talcum powder and a repair kit (if I can find one), will be added
> to the inner tube in the boot.
>
> Now to turn in another direction. I have been wanting a set center lock
> alloy wheels for my BT7. They usually go on sale at VB under the guise of
> MGC wheels, but they have the same part number. I have been trying t
> convince myself to buy them for two years. Last February I found a set of
> mint used ones at the Chicagoland MG Club Autojumble. That is why I was
> trying to decide which car (I have a C also) to put them on. I decided to
> leave the C with wire wheels, and to make sure a flat wouldn't cripple the
> car.
>
> The alloy wheels are 5.5 inches wide as opposed to the 4 inches of the wire
> wheels.Vb suggests using 185-70-15 tires.
>
> Has anyone made this upgrade? Will that size tire affect the speedometer?
>
> I hope someone has tried this before and will share their experience with
> the list.
>
> Thanks again,
>
> /Jack
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