Wheel / tyre sizes...

[kosluk]

Hi Guys, i'm sure i've seen this before but i can't find it so appologies for the repeat.

Can someone please confirm or correct this info:

Raider wheels (as per 197) 17" x 7.5" = 215/45 tyre
Speedline wheels 17" x 8" = 225/45 tyre

Sorry for sounding like a dumb-ass but i can't help that :lol:
Thanks in advance for your help.

 

[TwingoGeekeo]

Raider wheels (as per 197) 17" x 7.5" = 215/45 tyre
Speedline wheels 17" x 7.5" = 215/45 tyre

 

[kosluk]

Raider wheels (as per 197) 17" x 7.5" = 215/45 tyre
Speedline wheels 17" x 7.5" = 215/45 tyre

Cheers Karl, as always your in the know!

I now recall that its the Cup racer wheels that are 17" x 8" right?!
But these are too soft for the road or something...?

 

[TwingoGeekeo]

Your not fair wrong there

 

[GrumpyTwig]

But these are too soft for the road or something...?

No, they're fine.

 

[kosluk]

No, they're fine.

hey Tom, even in the Pot hole City of Sheffield???
I know there has been much debate on the Cup racer wheels bending / distorting.

 

[GrumpyTwig]

If you go diving into potholes then sure, but any wheel with do the same.

They are not by any means a high magnesium content wheel (if you know a metalergist I'd be interested to get a spectrograph analysis ), as can be told by the weight. They are maybe 10kg each and I bet the road going variety are lighter.

So magnesium wheels are soft yes but unless you told someone they contained magnesium people wouldnt know, I suprised a guy who's been supporting race teams for 25~ years when he picked one up and he laughed as I told him.

 

[kosluk]

If you go diving into potholes then sure, but any wheel with do the same.

They are not by any means a high magnesium content wheel (if you know a metalergist I'd be interested to get a spectrograph analysis ), as can be told by the weight. They are maybe 10kg each and I bet the road going variety are lighter.

So magnesium wheels are soft yes but unless you told someone they contained magnesium people wouldnt know, I suprised a guy who's been supporting race teams for 25~ years when he picked one up and he laughed as I told him.

Metalergist... well i do actually know one! So they take 225/45 tyres?
Have you noticed improved grip from the slightly wider contact?

 

[GrumpyTwig]

Difficult to tell as the 225 tyres I use have much more tread than the 215 contis I have on my normal wheels.

I think the wider tyre changes how the car turns in as it seems a lot more progressive (could be read as slow), but then again it could just be the tyre.

 

[Ed...]

u can get a 245/45 on a 8j wheel

 

[kosluk]

u can get a 245/45 on a 8j wheel

Wouldn't that effect the turning circle some what Woody?

I don't want to make the car handle worse i guess i thought the wider tyre would offer more cornering grip, no?

 

[jeffro]

235/35 on an 8j retains a good sidewall height!!