varesecrazy said:

the bigger rolling diameter has had the effect of changing your gearing

RPM's will be lower at m-way speeds.., ( beware of speedo innacuracy!!)

Charlie

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varesecrazy said:

your wheels are probably @5% - 8 % larger (taller) = larger CIRCUMFERENCE

so at 30 mph your wheels will be revolving at @94% of their " normal speed"

Charlie

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Mkala said:

Really nice ! Thanks for pics

No worry for circumference, you are on the official size in 17", so according
http://tire-size-conversion.com/tire-size-calculator/
you have only 1.3% difference.

You lose acceleration because they are more heavy and you have more friction, because tires are larger.

Yes now you "need" to lower it

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Mkala said:

Really nice ! Thanks for pics

No worry for circumference, you are on the official size in 17", so according
http://tire-size-conversion.com/tire-size-calculator/
you have only 1.3% difference.

You lose acceleration because they are more heavy and you have more friction, because tires are larger.

Yes now you "need" to lower it

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Mkala said:

Steel rims are often lighter than alloy, even for the same size.

Unless you have special magnesium / lightweight alloys designed for racing, they are a lot heavier than you 15'' steelies.

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DazEvo said:

So finally bought my 17inch alloy wheels...

175/65/R15 >>>>>> 205/45/R17

They look amazing and really bring the car to life.. After these photos I did spruce up the tyres a bit with some shine

Advantages:

Huge grip on corners and not as much roll... and of course, the looks

Disadvantages:

Bit slower off the line now, Im guessing heavier wheels and because the wheel itself has a bigger diameter?

Next Project:

Spray rear disc brakes black because they are rusted and you can see it through the spokes

Lower the car? Ride height has gone up by 8mm.. do I need to buy new springs or can a garage lower my current suspension?

Opinions?

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AMR18 said:

Hi there - I'm new to the site, Can you tell me if you needed spacers or anything to accommodate the bigger wheels and offset? Thanks.

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