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Product Image IRC Formula S-Light TLR tubeless ready tyres

IRC Formula S-Light TLR tubeless ready tyres


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Introducing the new IRC Formula Pro S-Light TLR tyre. 

This new tyre is lighter than the previous version and uses the new RBCC II compund for improved grip. The tyre features bead protection and a new super light casing so this is the fastest tyre in the new IRC range. This tyre is has no latex inner lining so sealant will be sealing the casing. That one way it saves mass. The other is thinner sidewalls over its cousins in the Formula Pro series. 

The new RBCC is used in all FORMULA PRO series products. This tyre

The RBCC, which is loved by many for its firm grip through the bends and in wet conditions, has been used in all tyres in this series. While rolling resistance is reduced, while grip and abrasion resistance have been improved. 

Redesigned tread with a pattern that emphasizes controllability

Tread pattern to enhance 

Continuing from the previous tyre this time the center has adopted the Sugime pattern. The behavior near the limit, such as the start of tire slippage, is easier to spot and therefore more controllable. In addition, rolling resistance was reduced by adding four grooves in the circumferential direction, and the tyre is more are on uneven road surfaces as a result.

Compatible with disc brakes and wide rims

The tubeless tire, which has a structure in which the tire bead is pressed against the rim from the inside with air to retain air, is characterized by high safety due to the high degree of adhesion between the rim and the tire, but with the new FORMULA PRO series, the key is Further strengthening around the bead. We have succeeded in further improving safety so that it can withstand the stronger force applied by the disc brakes and pothole impacts. In accordance with the tubeless rim standards reviewed in 2019, it is also compatible with wide rims.


The Formula Pro series tyres unlike many other brands run true to size on a 19mm internal width rims which are used on our BORG series road wheels. 25mm tyres inflate to 25mm wide and 22mm tall. 28mm tyres are 28mm wide and 24mm tall. 30mm tyres are 30mm wide and just over 25mm tall

25mm tyre is 220g, 28mm tyre is 250g and 30mm tyre is 275g. 

80psi is the suggested max pressure. IRC state a max pressure of the sidewalls which half the max pressure at which blow off occurs in tests. I.e 90 to 115 psi means blow off occurs at 180 to 230 psi. Hense my max suggested pressure. 60 to 80 psi works well for most people.

COVID 19 update. Overseas shipping is now with a courier only. UPS or Parcel force.

U.K policy

Orders placed in the afternoon normally get sent the next workday where possible. Orders placed before noon are often sent the same day but this is not guaranteed. Priority is given to Royal Mail Special delivery items always. 

Same day disptach is not guaranteed due to volume of mail order. In general we are not operating with big delays in dispatch if any.

  • Standard shipping is with Royal Mail using there 24 service. Cost £3. This is not a guaranteed service and takes 1-7 days normally but can be longer. The tracking number is not tracking but is a conformation of delivery code. If the item has been delivered to you or a neighbour then the tracking shows something otherwise it won't. If the item is needed urgently then pay for the courier/special delivery. in the case of the items recorded as delivered but you claim non delivery or delivery attempted but parcel never available for collection no refund or replacement goods are possible. R24 is not a tracked or insured service. We are only liable if delivery never happens. We wait 30 days before declaring am item lost. If this is not acceptable to you then pay for Special Delivery which is tracked and insured. We are not longer taking the hit for lost items because you want to spend less on postage. 
  • For a £7 surcharge, a next day (not sunday) tracked service (from dispatch) with Royal mail special delivery is used. You get an hour delivery slot by text. It's a fine service and worth the money. This only works for items up to 2kg. beyond that it gets very expensive and Parcel Force 24 tracked is used. This is fully insured service so in the event of non delivery a claim is possible.
  • Rims are sent by courier only- cost £10. UPS is used. A phone number and email address must be supplied to allow me to book in. This service can also be picked for smaller items that you want delivered by UPS.
  • Wheels shipping cost is £15 (cost of courier + cost of the box) next day. To NI, Scottish Islands, Channel Islands, Isle of Man and that is a two day service.


Due to the disruption in postal services during 2020, misdeliveries, customs issues and long delays all overseas shipping is now with Royal Mail Internation al Tracked and Signed (europe only) and  UPS or Parcel Force tracked services. Parcel mass and destination affect price. So the following applies. I do not offer cheaper slower mail services anymore. Please don't ask as it means you have not read this page. There is no circumstance where i will use a cheaper service. 

The website will provide shipping rates at checkout.

The import charges you will face are and these will be levied by the shipping carrier or by your customs authority in advance of delivery. Customs clearance will add to shipping times. 

You will be billed for

Import duties which are set by the tarrif code we declare. Tarrif rates are normally published on government websites. "Free trade agreements" affect this and for EU customers there are no duties as tarrifs are set at zero for goods like our wheels that originate in the U.K. Goods that originate in the E.U  and are exported back yo the E.U attract tarriffs. Good made outside the e.u and sold into the E.U attract tarrifs. The declared value in GDP will be converted to your countries currency by the monthly rate published by your tax authority. 

Customs clearance fees -these vary from country to country and also vary by declared value in some juristictions. 

VAT or sales taxes and applied to  the total of the declared value of goods, customs clearance charges and import duties. 

This shop declares the total paid for the goods for customs value, no exceptions. We will not declare low values as thats fraud and we will not be party to it.


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