John E Posted April 8, 2000 Share Posted April 8, 2000 My live axle 7 has 13inch rims and wears tyres with a width of 205. Is something wrong here. The good book says 185. Maybe thats why its so twitchy on anything but a billiard table. Any advice you gurus. Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 8, 2000 Share Posted April 8, 2000 205's will go on a 6inch rim. The wider tyre means it's more liable to tramline which might be why it's twitchy. I was thinking of doing the same with my road tyres and I've just ordered some 205 ACB10's to use as rears with 185's at the front, all on 6" rims. Not sure how it'll go but it should be interesting. Alex Wong alex.wong@lotus7club.co.uk http://www.alexwong.net Home : 44-(0)121-440 6972 Fax : 44-(0)121-440 4601 Link to comment Share on other sites More sharing options...
old captain slow Posted April 9, 2000 Share Posted April 9, 2000 Alex, If you put different widths on front and rear, does this mean no spare ie Tyre Weld (is it any good?). Or can you stiil use a spare wheel. Link to comment Share on other sites More sharing options...
Barry Posted April 9, 2000 Share Posted April 9, 2000 Alex, Did you specify a different aspect ratio too? Or will the gearing difference and increased ride height not matter too much? Link to comment Share on other sites More sharing options...
Geoff Johnson Posted April 10, 2000 Share Posted April 10, 2000 I would be very interested to hear how the car goes on 185 fronts & 205 rears. I have an HPC with the standard 16" wheels & michelin 205's on, that never get hot & do suffer with tramlining & I would be very keen to put narrower fronts on & change to Yoko's all round. I do not know if the smaller front tyres would fit, or how it would affect the attitude of the car, obviously I do not want change the height of the front with respect to the rear (if that makes sense). Geoff Link to comment Share on other sites More sharing options...
StewartG Posted April 10, 2000 Share Posted April 10, 2000 Ive fitted 032R's, 185 front 205 rears on a Vauxhall engined car and its brilliant. Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 10, 2000 Share Posted April 10, 2000 I use a worn out 185 60 13 Yoko as a spare with my 13 inch wheels. It won't be ideal if I lose an ACB10 but it should get me home. I do carry a tin of tyreweld as well but I've never tried it. The ACBs will be 185-55 13 fronts and 205-55 13 rears so rolling circumferance shouldn't change much compared to my 185-60 13 Yoko's. Ride height will be a tiny bit lower but the gearing should only be a little higher than with my 60 profile yoko's. As the tyres are for track use only, the lower gearing should be a benefit, especially with the close ratio box with it's high first (55mph in first). Alex Wong alex.wong@lotus7club.co.uk http://www.alexwong.net Home : 44-(0)121-440 6972 Fax : 44-(0)121-440 4601 Edited by - Alex Wong on 10 Apr 2000 12:19:26 Edited by - Alex Wong on 10 Apr 2000 12:20:08 Link to comment Share on other sites More sharing options...
John E Posted April 11, 2000 Author Share Posted April 11, 2000 So after all that what is the best for road use? Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 11, 2000 Share Posted April 11, 2000 For a road Seven, I'd go for 021R's - 185 60 13 all round. If ground clearance is an issue, you can get them in 70 profile. Not very pretty but prettier than a puddle of oil under your car! Alternatively, go for bigger wheels if ground clearance is a problem. If the 021 lifespan (approx 5-7000 miles for pure road use) is too short, I'd go for A520 yoko's but I think they've just replaced them with something newer. I use 14" A520's - 10,000 miles and hardly worn, but they're nowhere near as good as the 021's I had. Other choices? 032R's are good in the dry so if you don't take the 7 out in the rain, these would be ideal. ACB10's aren't great road tyres - short lifespan, lower profile (& rideheight), plus they're expensive. Alex Wong alex.wong@lotus7club.co.uk http://www.alexwong.net Home : 44-(0)121-440 6972 Fax : 44-(0)121-440 4601 Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted April 14, 2000 Share Posted April 14, 2000 My car uses the 'std' Prisoner 15" with Yoko 195/50's and does seem to suffer with tramline-itis. What's the best solution Alex? No, I'm not changing tyres yet as this set are only 550 miles old! Link to comment Share on other sites More sharing options...
Anna Rexia Posted April 16, 2000 Share Posted April 16, 2000 Alex, Why are you the only person with a bunch of carrots at the end of your "posted/profile" line, what do they mean? Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 16, 2000 Share Posted April 16, 2000 The haemorrhoids icon is supposed to be an ICQ logo. ICQ is a program that tells other people (only those you want to) when you're on the net and allows you to chat directly to them whilst you're both connected. Actually, I don't use it anymore as MSN a similar program called MSN messenger which is easier to setup and works together with Hotmail. I still think the icon looks like something in need of some ointment though! Alex Wong alex.wong@lotus7club.co.uk http://www.alexwong.net Home : 44-(0)121-440 6972 Fax : 44-(0)121-440 4601 Link to comment Share on other sites More sharing options...
Anna Rexia Posted April 18, 2000 Share Posted April 18, 2000 Thanks Alex, think I understand. (That's what I wanted to call it but haemorrhoids wasn't in my dictionary and I didn't dare get it wrong - some of my mousefriends might notice and you know what they're like! Hope you're better soon). Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 18, 2000 Share Posted April 18, 2000 I think the tramlinitis is probably unavoidable with the 15" wheels. Would increasing the camber (and reducing the tyre contact patch - ie grip) reduce it? Also, toeing in the front might help make it feel less twitchy. Have I got this the right way round? I think toeing in makes the turn in less sharp but I'm not sure. Anybody else? Alex Wong alex.wong@lotus7club.co.uk http://www.alexwong.net Home : 44-(0)121-440 6972 Fax : 44-(0)121-440 4601 Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted April 18, 2000 Share Posted April 18, 2000 Looked it up - Toe in should make it less twitchy. Click here for a good explanation of the effects of Toe and Camber Edited by - Alex Wong on 18 Apr 2000 14:11:33 Link to comment Share on other sites More sharing options...
Captainbilos Posted April 18, 2000 Share Posted April 18, 2000 I'm not sure if this is correct, but I was recently informed that Yoko no longer make 021R's. Can anyone confirm this? Link to comment Share on other sites More sharing options...
Graham Sewell Posted April 20, 2000 Share Posted April 20, 2000 I cannot vouch for 185/60R13 but I know that the 70 profile is going to be around for at least the next 4 years as Yoko have recently signed a contract to supply these as control tyres to the 'Oval' racing fraternity. Also bloody good value at 40ukp per corner (fitted). Link to comment Share on other sites More sharing options...
Ben_S Posted April 20, 2000 Share Posted April 20, 2000 Where from?? Link to comment Share on other sites More sharing options...
old captain slow Posted April 22, 2000 Share Posted April 22, 2000 Re Geoff Johnson's note about 16" Michelins, I find that on track days, a couple of psi extra all round does get some heat into them and improves the grip quite noticeably. Also the balance of the grip front to rear is much improved too. The extra pressure makes the ride a bit too choppy for every day road use, however. Link to comment Share on other sites More sharing options...
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