# 110 vs 120 rear tyre
**URL:** https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604
**Category:** Big Block Tonti and Loop Frame models
**Created:** [1 June 2017 07:08 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604 "2017-06-01T07:08:09Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@lemon](https://forum.motoguzziclub.co.uk/u/lemon)
#### Post date: [1 June 2017 07:08 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/1 "2017-06-01T07:08:09Z")
Many people say Tontis run much better on 110/90 rear tyre but the Bridgestone website says different:
[http://www.bridgestone.co.uk/motorcycle-tyres/tyre-catalog/search-by-vehicle/](http://www.bridgestone.co.uk/motorcycle-tyres/tyre-catalog/search-by-vehicle/)
comments?
Kate??
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### Author:  [@iandunmore](https://forum.motoguzziclub.co.uk/u/iandunmore)
#### Post date: [1 June 2017 09:20 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/2 "2017-06-01T09:20:40Z")
What bike?
My MKIII le Mans ran better with Conti’s or BT45’s than Avons because the tyrses are slightly narrower. a friend reckoned I was 10 mph quicker through the bendy bits.
This was 110/90.
Someone on here bought a MK11with 120/90 and junked them almost immediately.
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### Author:  [@Mike\_H](https://forum.motoguzziclub.co.uk/u/Mike_H)
#### Post date: [1 June 2017 09:58 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/3 "2017-06-01T09:58:48Z")
The cynic in me sez it’s just sales blurb to sell the tyre.
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### Author:  [@Duffo](https://forum.motoguzziclub.co.uk/u/Duffo)
#### Post date: [1 June 2017 15:06 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/4 "2017-06-01T15:06:32Z")
plus 1 for the 110, bought a Spada with a 120 once, although the tyre just cleared the swinging arm, it felt cumbersome through the twisties, replaced with a 110 Avon, the magic came back.
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### Author:  [@MartinDavey852](https://forum.motoguzziclub.co.uk/u/MartinDavey852)
#### Post date: [2 June 2017 11:47 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/5 "2017-06-02T11:47:34Z")
Yep. Me too. 110 all the way. I have 110 Avons on both of mine and i think they are great. To be fair I havn’t tried anything different,
but if it ain’t broke…
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### Author:  [@iandunmore](https://forum.motoguzziclub.co.uk/u/iandunmore)
#### Post date: [2 June 2017 12:45 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/6 "2017-06-02T12:45:35Z")
It’s all down to personal preferences but I found BT45’s much better than Avon’s.
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### Author:  [@Phil\_Gough](https://forum.motoguzziclub.co.uk/u/Phil_Gough)
#### Post date: [2 June 2017 15:38 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/7 "2017-06-02T15:38:02Z")
+1 for personal preference,
I’ve tried the 100 front 110 rear combo and the 110 front 120 rear combo and like the slightly fatter set up the best 😃
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### Author:  [@jmee54](https://forum.motoguzziclub.co.uk/u/jmee54)
#### Post date: [2 June 2017 19:32 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/8 "2017-06-02T19:32:42Z")
I have 110 and 120 on my Eldorado. It came that way. It won’t be long before I have to change the tyres, but don’t know which way to go!
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### Author:  [@Kate\_n\_Guy](https://forum.motoguzziclub.co.uk/u/Kate_n_Guy)
#### Post date: [3 June 2017 09:01 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/9 "2017-06-03T09:01:24Z")
We run same size front and rear on our loops jmee…120s…and at about 25 pounds pressure…
On tontis I prefer110s on the rear…tho I think avon do an inbetween size…I remember putting a 120 on the back of my blue Mk 2 many years ago and it made it weave…phantoms we all seemed to use then…
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### Author:  [@jmee54](https://forum.motoguzziclub.co.uk/u/jmee54)
#### Post date: [3 June 2017 18:37 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/10 "2017-06-03T18:37:24Z")
Are those your Maxxis white walls Kate? I’m not sure, without a trip to the shed, what my tyres are. They were on it when it came from America. I have been running my pressures at about 35. It feels a trifle unstable on corners when they pressures get too low.
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### Author:  [@DavieL](https://forum.motoguzziclub.co.uk/u/DavieL)
#### Post date: [4 June 2017 07:57 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/11 "2017-06-04T07:57:36Z")
110/120 Pirelli Demon Sport work for me. 33/35 psi. Some say Avons start to go off when half worn. I bought mine with half worn Avons and they had a tendency to track every line on the road.
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### Author:  [@Mike\_H](https://forum.motoguzziclub.co.uk/u/Mike_H)
#### Post date: [4 June 2017 11:06 UTC](https://forum.motoguzziclub.co.uk/t/110-vs-120-rear-tyre/2604/12 "2017-06-04T11:06:58Z")
Having used Demons myself, if you measure them they might actually measure as 100 / 110, previously I had Avon something or other can’t remember, the front one measured a true actual 100 and was rubbing the mudguard (plastic LM - Spada style) so had to sand a bit off of each side. The mudguard that is. I concluded that hitherto, a “100” usually turned out to be 90 in practice.