biffer4240 Posted February 28, 2021 Share Posted February 28, 2021 ive now got to the stage of choosing tyres for the new build i have decided to go for insa turbo special trac as used them before and found them good but was wondering what size most of you trial lads or lasses run a few told me to go with 205 others say 225 or 235 80 16 so any feed back would be great thanks Quote Link to comment Share on other sites More sharing options...
Chicken Drumstick Posted February 28, 2021 Share Posted February 28, 2021 What are they going on? What will they be used for? And on what sort of terrain? Quote Link to comment Share on other sites More sharing options...
biffer4240 Posted February 28, 2021 Author Share Posted February 28, 2021 1 hour ago, Chicken Drumstick said: What are they going on? What will they be used for? And on what sort of terrain? its going on a 88 inch ccv trials with defender 1 axels will be used only for trials the terrain could be any thing from rock to mud to forest Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 1, 2021 Share Posted March 1, 2021 I think it’s hard to find metric tyres with more than 85% ratio, so 205/100 isn’t likely to be an option. 205/85 is going to be a bit small a diameter for ground clearance, though the width would be good. 235/85 is a good size for Defenders, but may be little wide for an 88”, so I’d look at the 225/85s. But you’re probably better off trying to find some 7.50s, which are a standard size for the 88”. That will keep the steering light and will give the correct footprint for the best compromise of off road conditions. Those old Imperial sizes have square section profiles, ie their height is the same as the tread width, so they give the best height for the narrowest tyre. Quote Link to comment Share on other sites More sharing options...
Chicken Drumstick Posted March 1, 2021 Share Posted March 1, 2021 A lot of guys still run 205's, although there does seem to be a growing trend to go with bigger wheels. The 205's might limit you with clearance at times or if there are deep ruts. But smaller tyres might turn better. Over the years I've found I like narrow tyres over fat ones for trialling in the UK. So I tend to go for more of a 7.00 x 16, 7.50 x 16 or maybe a 235/85R16 I also understand the Simex copies (Insa Turbo!!!) are popular. Although personally I'm not really a fan of them. I'd go for a good set of diamonds. I think a few people are switching to diamonds these days too. Got a few mates who are running these in 235/85 on their 80" CCV motors: https://www.fedimatyres.com/en/4x4/4x4/maxi-grip Diamonds in a 7.50 size seem hard to get currently. I had some blackstars which worked well: https://black-star.fr/en/produit/venezuela-4/ But I can't find any for sale at the mo. Quote Link to comment Share on other sites More sharing options...
biffer4240 Posted March 1, 2021 Author Share Posted March 1, 2021 11 hours ago, Snagger said: I think it’s hard to find metric tyres with more than 85% ratio, so 205/100 isn’t likely to be an option. 205/85 is going to be a bit small a diameter for ground clearance, though the width would be good. 235/85 is a good size for Defenders, but may be little wide for an 88”, so I’d look at the 225/85s. But you’re probably better off trying to find some 7.50s, which are a standard size for the 88”. That will keep the steering light and will give the correct footprint for the best compromise of off road conditions. Those old Imperial sizes have square section profiles, ie their height is the same as the tread width, so they give the best height for the narrowest tyre. many thanks that has helped alot 1 Quote Link to comment Share on other sites More sharing options...
LiftedDisco Posted March 1, 2021 Share Posted March 1, 2021 235-85 R16 will run at just under 32” (31.7” to be precise) - I originally ran some 215-85 R16’s which everyone thought were too narrow but, in reality, were cracking tyres that would cut through the mire and get some decent drip whilst also giving a decent turning circle. The 215-85 R16’s will give you a tyre size of 30.3” so not quite so much clearance under the diff... Quote Link to comment Share on other sites More sharing options...
Escape Posted March 2, 2021 Share Posted March 2, 2021 10 hours ago, LiftedDisco said: 235-85 R16 will run at just under 32” (31.7” to be precise) That will depend on the brand and possibly even the thread. An agressive remould like the Insa Turbo in 235/85R16 is likely to be over 32". Quote Link to comment Share on other sites More sharing options...
biffer4240 Posted March 2, 2021 Author Share Posted March 2, 2021 20 hours ago, LiftedDisco said: 235-85 R16 will run at just under 32” (31.7” to be precise) - I originally ran some 215-85 R16’s which everyone thought were too narrow but, in reality, were cracking tyres that would cut through the mire and get some decent drip whilst also giving a decent turning circle. The 215-85 R16’s will give you a tyre size of 30.3” so not quite so much clearance under the diff... thankyou very much how ever insa turbo dont do a 215 or 225 so maybe need to look at dimonds or maybe another type Quote Link to comment Share on other sites More sharing options...
biffer4240 Posted March 2, 2021 Author Share Posted March 2, 2021 10 hours ago, Escape said: That will depend on the brand and possibly even the thread. An agressive remould like the Insa Turbo in 235/85R16 is likely to be over 32". thankyou for your reply never thort tyres could be so complex Quote Link to comment Share on other sites More sharing options...
Escape Posted March 2, 2021 Share Posted March 2, 2021 2 hours ago, biffer4240 said: thankyou for your reply never thort tyres could be so complex Aah yes, many hours of debate to be had over tyres, preferably in the pub with a good pint (or 2). 😉 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.