viewtopic.php?f=8&t=92168
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| Pros and Cons of 12x5.5 to 12x6 https://www.ausmini.com/forums/viewtopic.php?f=2&t=93008 |
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| Author: | zulu_warrior1976 [ Wed Jun 29, 2016 4:38 pm ] |
| Post subject: | Pros and Cons of 12x5.5 to 12x6 |
Hi All, Am wanting to fir some 12's to my 67 Mini because I like the look. I have 10's on it at the moment that are period contessa's. When it comes to 4.5, or 5 or 5.5 or 6" rims / tyres I am at a loss to the pros and cons.... I am considering 12x6's but don't want to just jump in if they are going to damage or unduly wear the front steering and suspension... Would 5.5's be better? Or 5's? 4.5's are a tad pizza cutter like for me... I want to go more aggressive. Cheers with beers, Zulu |
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| Author: | Lillee [ Wed Jun 29, 2016 5:15 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
Having driven cars with 10", 12" and 13" wheels, they handle best on 10's and hence why I have left mine that way. |
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| Author: | fuzzy-hair-man [ Wed Jun 29, 2016 5:46 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
A large part of this is from theory/reading .... so take from it what you will... I'd perhaps start with what tyre or tyres you are looking at and they should have a suggested rim size or rim size range. The wider rims will provide more support or stability to the tire and lessen how much it deforms under load / cornering making it feel sharper. Wider offset will increase the track which helps cornering but can also make your mini more of a handful (below). The problem becomes this extra width often comes with an offset to the outside of the vehicle which is good if you want that stanced wide look but for handling it's generally a bad thing (but it does widen track). The extra width means the wheel has more leverage over the steering so torque steer and irregularities in the road have a greater effect on the wheel you feel this like the car is trying to fight you. Mini's were designed around 10" wheels and use the extra sidewall profile as part of the suspension, going to 12's isn't as bad as going to 13's but you are reducing the sidewall and therefore the amount that can be absorbed by the tyre, you MAY be able to get some of this back by using a rim at the narrower end of the suggested range. Extra width and offset may need other flares so this enters into it as well. The further out the wheels are offset the greater the leverage (as before) but this leverage also applies to all of the suspension components, by fitting 12's you're probably asking more of the suspension (ball joints, bearings, shocks, rack ends etc) (larger heavier wheel, less absorbsion though the sidewall, and generally heavier brakes) an offset would magnify this... that said they do work and survive. Extra weight and leverage may mean more is required from your shocks to contain it as well so they may need to be upgraded. In summary if I was prioritizing handling I'd fit 10's if I had to go bigger I'd go 12's, next I'd try to get the smallest offset to the outside (offset in is better) of the car possible, then try to search for extra width after this, extra width will quite often come at the expense of this offset. What is the car intended to do? is it a daily? weekend toy? or track car? I remember a comment of Calver's saying bigger wheels accentuate everything bad about the mini suspension, and I promptly kept to 10's that said 12's aren't as bad as 13's. Here's a link (there's I think another article in there that is useful): http://www.calverst.com/technical-info/suspension-kpo-adverse-effects-of-fitting-wide-wheels/ |
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| Author: | zulu_warrior1976 [ Thu Jun 30, 2016 8:18 am ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
Lillee wrote: Having driven cars with 10", 12" and 13" wheels, they handle best on 10's and hence why I have left mine that way. Thanks and I agree. I'll keep the 10's but want to personalise it for a while with 12's. |
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| Author: | zulu_warrior1976 [ Thu Jun 30, 2016 8:22 am ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
Thanks Fuzzy Hair Man. Awesome response. Car is a weekender at the moment but is likely to become a daily soon. Zulu |
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| Author: | Besser [ Mon Jul 04, 2016 12:51 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
I have both and think 10's better overall. Vibration, torque steer, noise increase moving to 12". Then adding wider rim/tyres, and heavier brakes makes the feel alot worse. Try 10' at low pressure to touring and high pressure for spirited driving and you'll appreciate their versatility. 12v's look good IMHO If you're happy to fight the car to go faster then 12 are for you. If you like the pimped look go 12s or 13s. For straight driving enjoyment, 10's are suit all areas. |
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| Author: | zulu_warrior1976 [ Mon Jul 04, 2016 1:54 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
I might get some 12s and try them out. Or get stickies on my 10's... Hmmm |
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| Author: | Lillee [ Mon Jul 04, 2016 3:11 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
or get those new 10x5.5's for even better handling. |
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| Author: | fuzzy-hair-man [ Mon Jul 04, 2016 7:19 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
A relevant discussion on TMF (UK): http://www.theminiforum.co.uk/forums/topic/318335-rim-size-vs-handling/ |
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| Author: | BKozan [ Mon Jul 11, 2016 2:19 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
viewtopic.php?f=8&t=92168
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| Author: | zulu_warrior1976 [ Tue Aug 16, 2016 5:39 pm ] |
| Post subject: | Re: Pros and Cons of 12x5.5 to 12x6 |
so torn... |
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