pathfinder
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 posted on 30/6/05 at 02:01 PM |
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wide wheels
I have been looking at 7 type cars for a while and notice that most people are using road derived 7” wheels and tyres. is this purely for cost
reasons?
I have also seen a few hill climbers using 10.5” and 8.5” wheels, does the extra rubber make any difference on a 7?
Opinions on the web seem to vary greatly on the subject of increasing tyre width, some are for and some are against, please discuss!
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scoobyis2cool
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| posted on 30/6/05 at 02:33 PM |
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You'll find that people use even narrower tyres than 7", particularly at the front. The problem with wider tyres is that with such a light
car, once you get a bit of rain the car will aquaplane very easily. I think you'd be better off sticking to narrower tyres, this will give a
better car overall.
Pete
It's not that I'm lazy, it's that I just don't care...
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DarrenW
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| posted on 30/6/05 at 03:30 PM |
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im using 7" wide 15" dia wheels purely cos they were there. i dont intend going any wider than 195 tyres. If poss i would have gone
narrower on the wheels. 13" wheels with 185 rubber seem to be popular.
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JonBowden
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| posted on 30/6/05 at 03:43 PM |
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Is there any arguement for choosing narrow high profile tyres - say 165 70
Would this give better (or more enjoyable) handling at the expense of less grip ?
Jon
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pathfinder
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| posted on 30/6/05 at 03:44 PM |
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Rescued attachment 1.JPG
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gazza285
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| posted on 30/6/05 at 03:47 PM |
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Who cares about the wheels, I want that BDA.
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Jeffers_S13
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| posted on 30/6/05 at 04:14 PM |
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I think its mostly for cosmetic reasons that people go for wide wheels, have a look at the RCB77 website for some extreme wide tyres 
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Liam
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| posted on 30/6/05 at 08:44 PM |
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If you only plan to race the thing on nice smooth tracks and always in the dry, the wider the better! Ain't some guy on here using formula 1
wheels and tyres?
I'll stick with me 195/50 15s
Liam
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JoelP
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| posted on 30/6/05 at 08:49 PM |
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mine has 13x5.5 at the front, 7 at the rear with 205 tyres. Thats more than enough grip for a 1.6 pinto!
Its the age old debate about how the car breaks away when it runs out of grip. Make your own mind up!
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smart51
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| posted on 30/6/05 at 09:43 PM |
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low profile tyres give better tyre control - they twist, stretch and roll less. This gives better turn in adn better response to small steering
movements.
High profile tyres are more quashy and give a better ride.
Both tyres (for the same width and rolling circumference) give the same amount of "grip" because they have the same area of rubber
touching the road.
I am told that high profile tyres loose their grip progressivley and very low profile tyres hold on longer but then let go more quickly.
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Grintch
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| posted on 1/7/05 at 04:06 PM |
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It all depends on the planned use of the car. My U.S. autocross car uses 8" front and 10" rear tires (slicks) and still has a good bit of
overstear (190hp & 1250lb). I have played with the idea of going up to Formula Atlantic sized tires, 9" front and 14" rear, but for
autocrossing a narrow car is generally better (to fit between the cones).
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David Jenkins
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| posted on 1/7/05 at 07:00 PM |
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I have 13" x 5.5" wheels with 185/70 tyres. Smooth ride, and an easy and predictable tail slide when I get silly/careless.
David
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