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Wheel question

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I currently have 16" alloys on my felicia but i want to put 17" alloys on, i know 17s will fit as ive had a set on my car before however these were 7x17 but the wheels i like are 7.5x17. So my question is will the 7.5" wide 17s fit without causing any problems?

i think a question like that is a bit of an unknown quantity to be honest, you need to try it out to find out for sure, i wouldn't recommend using wheels bigger than about 15" on a felicia otherwise the handling will be ruined, you'll get a fair old bit of tramlining with wide wheels like 7.5j

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i think a question like that is a bit of an unknown quantity to be honest, you need to try it out to find out for sure, i wouldn't recommend using wheels bigger than about 15" on a felicia otherwise the handling will be ruined, you'll get a fair old bit of tramlining with wide wheels like 7.5j

how come the steering is ruined when bigger wheels are used? too heavy or something? Is it still affected if u match the orginal rolling radius?

and is tramlining deemed to be unsafe?

how come the steering is ruined when bigger wheels are used? too heavy or something? Is it still affected if u match the orginal rolling radius?

and is tramlining deemed to be unsafe?

Larger footprint on the road, plus there is a fair chance they will catch on the arches at full lock

And the bigger rims you go, the more expensive the tyres go, plus you put more stress on the steering rack, and ball joints. Remember, these components are only designed for skinny 13 inch rims.

Edited by FellyMagic

Some of this is based on "reasonable values" because there can be several kg of difference between a brand X wheel or tyre and a brand Y one in the same size.

A stock 5.5Jx13 steel rim for a Felly weighs maybe 6.5kg; the stock 165R13S tyre weighs about 5kg. A 7.5x17 cast rim is likely to weigh in at more like 10kg, and a 205/50R17W tyre about 9kg. So this gives us 11.5kg vs 19kg. So straight away we've got 19/11 = 1.7x more static unsprung weight. Now the rolling inertia of this rises as a 4th power function, so if we assign the stock fit an inertia at $speed of 1, the big rims effectively weigh about 10.6 times more. This will ruin the handling because the wheels will respond so much slower, and try to move much further on bumps due to the springs and dampers not being designed for the extra mass.

That's before we even visit whether or not you've moved the centre of the contact patch relative to the kingpin line, which could increase steering weight, increase or reduce self-centring reponse, and induce what is often known as "bump-steer" (it isn't really, but let's leave what bump-steer actually is out of this one).

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